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MySQL 5.1: Item Class Reference

Item Class Reference

#include <item.h>

Inheritance diagram for Item:

[legend]Collaboration diagram for Item:

[legend]List of all members.


Public Types
	FIELD_ITEM = 0
	FUNC_ITEM
	SUM_FUNC_ITEM
	STRING_ITEM
	INT_ITEM
	REAL_ITEM
	NULL_ITEM
	VARBIN_ITEM
	COPY_STR_ITEM
	FIELD_AVG_ITEM
	DEFAULT_VALUE_ITEM
	PROC_ITEM
	COND_ITEM
	REF_ITEM
	FIELD_STD_ITEM
	FIELD_VARIANCE_ITEM
	INSERT_VALUE_ITEM
	SUBSELECT_ITEM
	ROW_ITEM
	CACHE_ITEM
	TYPE_HOLDER
	PARAM_ITEM
	TRIGGER_FIELD_ITEM
	DECIMAL_ITEM
	XPATH_NODESET
	XPATH_NODESET_CMP
	VIEW_FIXER_ITEM
	COND_UNDEF
	COND_OK
	COND_TRUE
	COND_FALSE
	POSTFIX
	PREFIX
enum	Type { FIELD_ITEM = 0, FUNC_ITEM, SUM_FUNC_ITEM, STRING_ITEM, INT_ITEM, REAL_ITEM, NULL_ITEM, VARBIN_ITEM, COPY_STR_ITEM, FIELD_AVG_ITEM, DEFAULT_VALUE_ITEM, PROC_ITEM, COND_ITEM, REF_ITEM, FIELD_STD_ITEM, FIELD_VARIANCE_ITEM, INSERT_VALUE_ITEM, SUBSELECT_ITEM, ROW_ITEM, CACHE_ITEM, TYPE_HOLDER, PARAM_ITEM, TRIGGER_FIELD_ITEM, DECIMAL_ITEM, XPATH_NODESET, XPATH_NODESET_CMP, VIEW_FIXER_ITEM }
enum	cond_result { COND_UNDEF, COND_OK, COND_TRUE, COND_FALSE }
enum	traverse_order { POSTFIX, PREFIX }
Public Member Functions
	Item ()
	Item (THD thd, Item item)
virtual	~Item ()
void	set_name (const char str, uint length, CHARSET_INFO cs)
void	rename (char *new_name)
void	init_make_field (Send_field *tmp_field, enum enum_field_types type)
virtual void	cleanup ()
virtual void	make_field (Send_field *field)
Field *	make_string_field (TABLE *table)
virtual bool	fix_fields (THD , Item *)
void	quick_fix_field ()
int	save_in_field_no_warnings (Field *field, bool no_conversions)
virtual int	save_in_field (Field *field, bool no_conversions)
virtual void	save_org_in_field (Field *field)
virtual int	save_safe_in_field (Field *field)
virtual bool	send (Protocol protocol, String str)
virtual bool	eq (const Item *, bool binary_cmp) const
virtual Item_result	result_type () const
virtual Item_result	cast_to_int_type () const
virtual enum_field_types	field_type () const
virtual enum Type	type () const =0
virtual enum_monotonicity_info	get_monotonicity_info () const
virtual double	val_real ()=0
virtual longlong	val_int ()=0
ulonglong	val_uint ()
virtual String *	val_str (String *str)=0
virtual my_decimal *	val_decimal (my_decimal *decimal_buffer)=0
virtual bool	val_bool ()
virtual String *	val_nodeset (String *)
String *	val_string_from_real (String *str)
String *	val_string_from_int (String *str)
String *	val_string_from_decimal (String *str)
my_decimal *	val_decimal_from_real (my_decimal *decimal_value)
my_decimal *	val_decimal_from_int (my_decimal *decimal_value)
my_decimal *	val_decimal_from_string (my_decimal *decimal_value)
longlong	val_int_from_decimal ()
double	val_real_from_decimal ()
virtual Field *	get_tmp_table_field ()
virtual Field *	tmp_table_field (TABLE *t_arg)
virtual const char *	full_name () const
virtual double	val_result ()
virtual longlong	val_int_result ()
virtual String *	str_result (String *tmp)
virtual my_decimal *	val_decimal_result (my_decimal *val)
virtual bool	val_bool_result ()
virtual table_map	used_tables () const
virtual table_map	not_null_tables () const
virtual bool	basic_const_item () const
virtual Item *	new_item ()
virtual cond_result	eq_cmp_result () const
uint	float_length (uint decimals_par) const
virtual uint	decimal_precision () const
int	decimal_int_part () const
virtual bool	const_item () const
virtual bool	const_during_execution () const
virtual void	print (String *str_arg)
void	print_item_w_name (String *)
virtual void	update_used_tables ()
virtual void	split_sum_func (THD thd, Item *ref_pointer_array, List< Item > &fields)
void	split_sum_func2 (THD thd, Item ref_pointer_array, List< Item > &fields, Item *ref, bool skip_registered)
virtual bool	get_date (TIME *ltime, uint fuzzydate)
virtual bool	get_time (TIME *ltime)
virtual bool	get_date_result (TIME *ltime, uint fuzzydate)
virtual bool	is_null ()
virtual void	top_level_item ()
virtual void	set_result_field (Field *field)
virtual bool	is_result_field ()
virtual bool	is_bool_func ()
virtual void	save_in_result_field (bool no_conversions)
virtual void	no_rows_in_result ()
virtual Item *	copy_or_same (THD *thd)
virtual Item *	copy_andor_structure (THD *thd)
virtual Item *	real_item ()
virtual Item *	get_tmp_table_item (THD *thd)
virtual CHARSET_INFO *	compare_collation ()
virtual bool	walk (Item_processor processor, bool walk_subquery, byte *arg)
virtual Item *	transform (Item_transformer transformer, byte *arg)
virtual void	traverse_cond (Cond_traverser traverser, void *arg, traverse_order order)
virtual bool	remove_dependence_processor (byte *arg)
virtual bool	remove_fixed (byte *arg)
virtual bool	cleanup_processor (byte *arg)
virtual bool	collect_item_field_processor (byte *arg)
virtual bool	find_item_in_field_list_processor (byte *arg)
virtual bool	change_context_processor (byte *context)
virtual bool	is_expensive_processor (byte *arg)
virtual bool	register_field_in_read_map (byte *arg)
virtual bool	check_partition_func_processor (byte *bool_arg)
virtual Item *	equal_fields_propagator (byte *arg)
virtual Item *	set_no_const_sub (byte *arg)
virtual Item *	replace_equal_field (byte *arg)
virtual Item *	this_item ()
virtual const Item *	this_item () const
virtual Item **	this_item_addr (THD thd, Item *addr)
virtual uint	cols ()
virtual Item *	el (uint i)
virtual Item **	addr (uint i)
virtual bool	check_cols (uint c)
virtual bool	null_inside ()
virtual void	bring_value ()
Field *	tmp_table_field_from_field_type (TABLE *table, bool fixed_length)
virtual Item_field *	filed_for_view_update ()
virtual Item *	neg_transformer (THD *thd)
virtual Item *	safe_charset_converter (CHARSET_INFO *tocs)
void	delete_self ()
virtual bool	is_splocal ()
virtual Settable_routine_parameter *	get_settable_routine_parameter ()
virtual bool	result_as_longlong ()
Static Public Member Functions
static void *	operator new (size_t size)
static void *	operator new (size_t size, MEM_ROOT *mem_root)
static void	operator delete (void *ptr, size_t size)
static void	operator delete (void ptr, MEM_ROOT mem_root)
static CHARSET_INFO *	default_charset ()
Public Attributes
uint	rsize
String	str_value
my_string	name
my_string	orig_name
Item *	next
uint32	max_length
uint	name_length
uint8	marker
uint8	decimals
my_bool	maybe_null
my_bool	null_value
my_bool	unsigned_flag
my_bool	with_sum_func
my_bool	fixed
my_bool	is_autogenerated_name
DTCollation	collation
my_bool	with_subselect
Private Member Functions
	Item (const Item &)
void	operator= (Item &)

Detailed Description

Definition at line 447 of file item.h.

Member Enumeration Documentation

enum Item::cond_result

Enumerator:

COND_UNDEF
COND_OK
COND_TRUE
COND_FALSE

Definition at line 468 of file item.h.

00468 { COND_UNDEF,COND_OK,COND_TRUE,COND_FALSE };

enum Item::traverse_order

Enumerator:

POSTFIX
PREFIX

Definition at line 470 of file item.h.

00470 { POSTFIX, PREFIX };

enum Item::Type

Enumerator:

FIELD_ITEM
FUNC_ITEM
SUM_FUNC_ITEM
STRING_ITEM
INT_ITEM
REAL_ITEM
NULL_ITEM
VARBIN_ITEM
COPY_STR_ITEM
FIELD_AVG_ITEM
DEFAULT_VALUE_ITEM
PROC_ITEM
COND_ITEM
REF_ITEM
FIELD_STD_ITEM
FIELD_VARIANCE_ITEM
INSERT_VALUE_ITEM
SUBSELECT_ITEM
ROW_ITEM
CACHE_ITEM
TYPE_HOLDER
PARAM_ITEM
TRIGGER_FIELD_ITEM
DECIMAL_ITEM
XPATH_NODESET
XPATH_NODESET_CMP
VIEW_FIXER_ITEM

Definition at line 458 of file item.h.

00458             {FIELD_ITEM= 0, FUNC_ITEM, SUM_FUNC_ITEM, STRING_ITEM,
00459              INT_ITEM, REAL_ITEM, NULL_ITEM, VARBIN_ITEM,
00460              COPY_STR_ITEM, FIELD_AVG_ITEM, DEFAULT_VALUE_ITEM,
00461              PROC_ITEM,COND_ITEM, REF_ITEM, FIELD_STD_ITEM,
00462              FIELD_VARIANCE_ITEM, INSERT_VALUE_ITEM,
00463              SUBSELECT_ITEM, ROW_ITEM, CACHE_ITEM, TYPE_HOLDER,
00464              PARAM_ITEM, TRIGGER_FIELD_ITEM, DECIMAL_ITEM,
00465              XPATH_NODESET, XPATH_NODESET_CMP,
00466              VIEW_FIXER_ITEM};

Constructor & Destructor Documentation

Item::Item ( const Item & ) [private]

Item::Item ( )

Definition at line 296 of file item.cc.

References current_thd, decimals, IN_HAVING, marker, max_length, maybe_null, next, null_value, SELECT_LIST, unsigned_flag, with_subselect, and with_sum_func.

00296           :
00297   rsize(0), name(0), orig_name(0), name_length(0), fixed(0),
00298   is_autogenerated_name(TRUE),
00299   collation(&my_charset_bin, DERIVATION_COERCIBLE)
00300 {
00301   marker= 0;
00302   maybe_null=null_value=with_sum_func=unsigned_flag=0;
00303   decimals= 0; max_length= 0;
00304   with_subselect= 0;
00305 
00306   /* Put item in free list so that we can free all items at end */
00307   THD *thd= current_thd;
00308   next= thd->free_list;
00309   thd->free_list= this;
00310   /*
00311     Item constructor can be called during execution other then SQL_COM
00312     command => we should check thd->lex->current_select on zero (thd->lex
00313     can be uninitialised)
00314   */
00315   if (thd->lex->current_select)
00316   {
00317     enum_parsing_place place= 
00318       thd->lex->current_select->parsing_place;
00319     if (place == SELECT_LIST ||
00320         place == IN_HAVING)
00321       thd->lex->current_select->select_n_having_items++;
00322   }
00323 }

Item::Item	(	THD *	thd,
		Item *	item
	)

Definition at line 330 of file item.cc.

References next.

00330                               :
00331   rsize(0),
00332   str_value(item->str_value),
00333   name(item->name),
00334   orig_name(item->orig_name),
00335   max_length(item->max_length),
00336   marker(item->marker),
00337   decimals(item->decimals),
00338   maybe_null(item->maybe_null),
00339   null_value(item->null_value),
00340   unsigned_flag(item->unsigned_flag),
00341   with_sum_func(item->with_sum_func),
00342   fixed(item->fixed),
00343   collation(item->collation)
00344 {
00345   next= thd->free_list;                         // Put in free list
00346   thd->free_list= this;
00347 }

virtual Item::~Item ( ) [inline, virtual]

Definition at line 510 of file item.h.

References name.

00511   {
00512 #ifdef EXTRA_DEBUG
00513     name=0;
00514 #endif
00515   }             /*lint -e1509 */

Member Function Documentation

virtual Item** Item::addr ( uint i ) [inline, virtual]

Reimplemented in Item_cache_row, Item_row, and Item_singlerow_subselect.

Definition at line 840 of file item.h.

Referenced by Item_in_subselect::row_value_transformer(), Arg_comparator::set_compare_func(), and this_item_addr().

00840 { return 0; }

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virtual bool Item::basic_const_item ( ) const [inline, virtual]

Reimplemented in Item_null, Item_param, Item_int, Item_decimal, Item_float, Item_string, and Item_hex_string.

Definition at line 687 of file item.h.

Referenced by Item_hex_string::eq(), Item_float::eq(), Item_int::eq(), Item_param::eq(), Item_decimal::eq(), Item_string::eq(), find_order_in_list(), fix_fields(), Item_func_set_collation::print(), and resolve_const_item().

00687 { return 0; }

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virtual void Item::bring_value ( ) [inline, virtual]

Reimplemented in Item_cache_row, Item_row, and Item_singlerow_subselect.

Definition at line 845 of file item.h.

Referenced by cmp_item_row::cmp(), Item_cache_row::store(), cmp_item_row::store_value(), and cmp_item_row::store_value_by_template().

00845 {}

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virtual Item_result Item::cast_to_int_type ( ) const [inline, virtual]

Reimplemented in Item_field, and Item_hex_string.

Definition at line 538 of file item.h.

References result_type().

Referenced by Item_func_unsigned::val_int(), and Item_func_signed::val_int().

00538 { return result_type(); }

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virtual bool Item::change_context_processor ( byte * context ) [inline, virtual]

Reimplemented in Item_ident, Item_func_sp, and Item_func_group_concat.

Definition at line 793 of file item.h.

00793 { return 0; }

bool Item::check_cols ( uint c ) [virtual]

Reimplemented in Item_cache_row, Item_row, and Item_singlerow_subselect.

Definition at line 568 of file item.cc.

References ER_OPERAND_COLUMNS, my_error(), and MYF.

Referenced by set_var::check(), Item_func_group_concat::fix_fields(), Item_sum_hybrid::fix_fields(), Item_sum_num::fix_fields(), Item_func_make_set::fix_fields(), Item_cond::fix_fields(), Item_field::fix_outer_field(), set_var::light_check(), mysql_execute_command(), st_table_list::prep_check_option(), JOIN::prepare(), and Item_in_subselect::row_value_transformer().

00569 {
00570   if (c != 1)
00571   {
00572     my_error(ER_OPERAND_COLUMNS, MYF(0), c);
00573     return 1;
00574   }
00575   return 0;
00576 }

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virtual bool Item::check_partition_func_processor ( byte * bool_arg ) [inline, virtual]

Reimplemented in Item_name_const, Item_num, Item_field, Item_null, Item_null_result, Item_static_float_func, Item_string, Item_static_string_func, Item_datetime, Item_return_int, Item_hex_string, Item_int_with_ref, Item_bool_rowready_func2, Item_func_not, Item_func_between, Item_func_strcmp, Item_func_ifnull, Item_func_nullif, Item_func_case, Item_func_in, Item_func_isnull, Item_is_not_null_test, Item_func_isnotnull, Item_func_like, Item_cond, Item_func_num1, Item_num_op, Item_func_signed, Item_decimal_typecast, Item_func_int_div, Item_func_exp, Item_func_ln, Item_func_log, Item_func_log2, Item_func_log10, Item_func_sqrt, Item_func_pow, Item_func_acos, Item_func_asin, Item_func_atan, Item_func_cos, Item_func_sin, Item_func_tan, Item_func_sign, Item_func_units, Item_func_min_max, Item_func_length, Item_func_char_length, Item_func_coercibility, Item_func_locate, Item_func_ascii, Item_func_ord, Item_func_find_in_set, Item_func_bit, Item_func_bit_count, Item_func_inet_aton, Item_func_md5, Item_func_sha, Item_func_concat, Item_func_reverse, Item_str_conv, Item_func_substr, Item_func_substr_index, Item_func_trim, Item_func_soundex, Item_func_rpad, Item_func_lpad, Item_func_conv, Item_func_hex, Item_func_unhex, Item_func_binary, Item_func_inet_ntoa, Item_func_quote, Item_func_conv_charset, Item_func_charset, Item_func_collation, Item_func_crc32, Item_func_uncompressed_length, Item_func_period_add, Item_func_period_diff, Item_func_to_days, Item_func_dayofmonth, Item_func_month, Item_func_dayofyear, Item_func_hour, Item_func_minute, Item_func_quarter, Item_func_second, Item_func_week, Item_func_yearweek, Item_func_year, Item_func_weekday, Item_func_unix_timestamp, Item_func_time_to_sec, Item_func_from_days, Item_func_date_format, Item_func_from_unixtime, Item_func_sec_to_time, Item_date_add_interval, Item_extract, Item_typecast_maybe_null, Item_char_typecast, Item_func_makedate, Item_func_add_time, Item_func_maketime, Item_func_microsecond, Item_func_timestamp_diff, Item_func_str_to_date, and Item_func_xml_extractvalue.

Definition at line 817 of file item.h.

References FALSE.

00818   { *(bool *)bool_arg= FALSE; return 0; }

void Item::cleanup ( ) [virtual]

Reimplemented in Item_ident, Item_field, Item_null, Item_int, Item_decimal, Item_float, Item_string, Item_hex_string, Item_result_field, Item_ref, Item_trigger_field, Item_cache, Item_cache_row, Item_in_optimizer, Item_func_in, Item_func_like, Item_func_match, Item_func_sp, Item_row, Item_subselect, Item_singlerow_subselect, Item_maxmin_subselect, Item_sum_distinct, Item_sum_count, Item_sum_count_distinct, Item_sum_hybrid, Item_func_group_concat, and Item_func_convert_tz.

Definition at line 373 of file item.cc.

References DBUG_ENTER, DBUG_VOID_RETURN, fixed, marker, name, and orig_name.

Referenced by Item_row::cleanup(), Item_result_field::cleanup(), Item_trigger_field::cleanup(), Item_ident::cleanup(), cleanup_items(), cleanup_processor(), delete_self(), and mysql_select().

00374 {
00375   DBUG_ENTER("Item::cleanup");
00376   fixed=0;
00377   marker= 0;
00378   if (orig_name)
00379     name= orig_name;
00380   DBUG_VOID_RETURN;
00381 }

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bool Item::cleanup_processor ( byte * arg ) [virtual]

Definition at line 392 of file item.cc.

References cleanup(), FALSE, and fixed.

Referenced by st_table_list::cleanup_items().

00393 {
00394   if (fixed)
00395     cleanup();
00396   return FALSE;
00397 }

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virtual bool Item::collect_item_field_processor ( byte * arg ) [inline, virtual]

Reimplemented in Item_field.

Definition at line 791 of file item.h.

Referenced by add_group_and_distinct_keys().

00791 { return 0; }

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virtual uint Item::cols ( ) [inline, virtual]

Reimplemented in Item_cache_row, Item_row, and Item_singlerow_subselect.

Definition at line 838 of file item.h.

Referenced by cmp_item_row::cmp(), Item_row::fix_fields(), Item_in_optimizer::fix_fields(), Item_in_optimizer::fix_left(), Item_in_subselect::row_value_transformer(), Item_in_subselect::select_in_like_transformer(), Item_cache_row::setup(), cmp_item_row::store_value(), and cmp_item_row::store_value_by_template().

00838 { return 1; }

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virtual CHARSET_INFO* Item::compare_collation ( ) [inline, virtual]

Reimplemented in Item_bool_func2, Item_func_between, Item_func_case, Item_func_in, Item_func_isnull, Item_func_isnotnull, and Item_equal.

Definition at line 770 of file item.h.

References NULL.

Referenced by check_group_min_max_predicates(), and get_mm_leaf().

00770 { return NULL; }

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virtual bool Item::const_during_execution ( ) const [inline, virtual]

Definition at line 705 of file item.h.

References PARAM_TABLE_BIT, and used_tables().

Referenced by Item_func_match::fix_fields(), Item_func_rand::fix_fields(), Item_func_like::fix_fields(), and JOIN::prepare().

00706   { return (used_tables() & ~PARAM_TABLE_BIT) == 0; }

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virtual bool Item::const_item ( ) const [inline, virtual]

Reimplemented in Item_sp_variable, Item_name_const, Item_copy_string, Item_func_trig_cond, Item_func, Item_func_rand, Item_func_sleep, Item_func_get_user_var, Item_row, Item_subselect, Item_sum, Item_sum_count, Item_sum_hybrid, and Item_func_sysdate_local.

Definition at line 700 of file item.h.

References used_tables().

Referenced by change_cond_ref_to_const(), check_group_min_max_predicates(), const_expression_in_where(), count_field_types(), create_tmp_table(), Item_row::fix_fields(), Item_func_like::fix_fields(), Item_cond::fix_fields(), Item_in_optimizer::fix_fields(), Item_name_const::fix_fields(), Item_in_optimizer::fix_left(), Item_func_make_set::fix_length_and_dec(), Item_func_if::fix_length_and_dec(), Item_func_interval::fix_length_and_dec(), group_concat_key_cmp_with_order(), JOIN::make_sum_func_list(), maxmin_in_range(), merge_key_fields(), mysql_delete(), Item_int_with_ref::new_item(), opt_sum_query(), remove_duplicates(), JOIN::rollup_make_fields(), Item_param::safe_charset_converter(), simple_pred(), Item_equal::update_const(), Item_func_make_set::update_used_tables(), Item_row::update_used_tables(), Item_func::update_used_tables(), Item_equal::update_used_tables(), Item_cond::update_used_tables(), uses_only_table_name_fields(), and Item_func_concat::val_str().

00700 { return used_tables() == 0; }

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virtual Item* Item::copy_andor_structure ( THD * thd ) [inline, virtual]

Reimplemented in Item_cond_and, and Item_cond_or.

Definition at line 765 of file item.h.

Referenced by fix_prepare_info_in_table_list(), JOIN::optimize(), st_table_list::prep_check_option(), st_table_list::reinit_before_use(), and simplify_joins().

00765 { return this; }

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virtual Item* Item::copy_or_same ( THD * thd ) [inline, virtual]

Reimplemented in Item_sum_sum, Item_sum_sum_distinct, Item_sum_avg_distinct, Item_sum_count, Item_sum_count_distinct, Item_sum_avg, Item_sum_variance, Item_sum_std, Item_sum_min, Item_sum_max, Item_sum_or, Item_sum_and, Item_sum_xor, Item_func_group_concat, and Item_sum_unique_users.

Definition at line 764 of file item.h.

Referenced by Item_sum::get_tmp_table_item(), Item_subselect::get_tmp_table_item(), Item_func::get_tmp_table_item(), get_tmp_table_item(), and JOIN::rollup_make_fields().

00764 { return this; }

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int Item::decimal_int_part ( ) const [inline]

Definition at line 694 of file item.h.

References decimal_precision(), decimals, and my_decimal_int_part().

Referenced by Item_func::count_decimal_length(), Item_func_case::decimal_precision(), Item_func_if::decimal_precision(), Item_func_ifnull::decimal_precision(), Item_func_min_max::fix_length_and_dec(), Item_type_holder::Item_type_holder(), and Item_type_holder::join_types().

00695   { return my_decimal_int_part(decimal_precision(), decimals); }

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uint Item::decimal_precision ( ) const [virtual]

Reimplemented in Item_int, Item_uint, Item_decimal, Item_bool_func, Item_bool_func2, Item_func_between, Item_func_interval, Item_func_ifnull, Item_func_if, Item_func_nullif, Item_func_case, Item_func_in, Item_func_signed, and Item_func_neg.

Definition at line 350 of file item.cc.

References DECIMAL_MAX_PRECISION, DECIMAL_RESULT, decimals, INT_RESULT, max_length, min, my_decimal_length_to_precision(), result_type(), and unsigned_flag.

Referenced by decimal_int_part(), Item_func_neg::decimal_precision(), Item_func_signed::decimal_precision(), Item_func_nullif::decimal_precision(), Item_sum_variance::fix_length_and_dec(), Item_sum_avg::fix_length_and_dec(), Item_sum_sum::fix_length_and_dec(), Item_func_round::fix_length_and_dec(), Item_func_div::result_precision(), Item_func_mul::result_precision(), Item_func_additive_op::result_precision(), and Item_func::tmp_table_field().

00351 {
00352   Item_result restype= result_type();
00353 
00354   if ((restype == DECIMAL_RESULT) || (restype == INT_RESULT))
00355     return min(my_decimal_length_to_precision(max_length, decimals, unsigned_flag),
00356                DECIMAL_MAX_PRECISION);
00357   return min(max_length, DECIMAL_MAX_PRECISION);
00358 }

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CHARSET_INFO * Item::default_charset ( ) [static]

Definition at line 807 of file item.cc.

References current_thd.

Referenced by Item_func_case::find_item(), Item_func_hex::fix_length_and_dec(), Item_func_conv::fix_length_and_dec(), Item_func_format::fix_length_and_dec(), Item_uint::print(), Item_proc_string::set(), Item_proc::set(), Item_func_case::val_decimal(), Item_func_case::val_int(), Item_func_case::val_real(), Item_proc_int::val_str(), Item_proc_real::val_str(), Item_func_export_set::val_str(), Item_func_hex::val_str(), Item_func_conv::val_str(), Item_func_format::val_str(), Item_cache_real::val_str(), and Item_cache_int::val_str().

00808 {
00809   return current_thd->variables.collation_connection;
00810 }

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void Item::delete_self ( ) [inline]

Definition at line 852 of file item.h.

References cleanup().

Referenced by free_items().

00853   {
00854     cleanup();
00855     delete this;
00856   }

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virtual Item* Item::el ( uint i ) [inline, virtual]

Reimplemented in Item_cache_row, Item_row, and Item_singlerow_subselect.

Definition at line 839 of file item.h.

Referenced by Item_func_group_concat::add(), cmp_item_row::cmp(), Item_in_optimizer::fix_left(), Item_func_interval::fix_length_and_dec(), Item_in_subselect::row_value_transformer(), Item_cache_row::setup(), split_sum_func2(), Item_cache_row::store(), cmp_item_row::store_value(), cmp_item_row::store_value_by_template(), and Item_func_interval::val_int().

00839 { return this; }

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bool Item::eq	(	const Item *	,
		bool	binary_cmp
	)			const `[virtual]`

Reimplemented in Item_field, Item_null, Item_param, Item_int, Item_decimal, Item_float, Item_string, Item_hex_string, Item_ref, Item_direct_view_ref, Item_default_value, Item_insert_value, Item_trigger_field, Item_func, Item_func_get_user_var, Item_func_match, Item_func_set_collation, Item_func_date_format, Item_date_add_interval, Item_extract, and Item_char_typecast.

Definition at line 624 of file item.cc.

References my_strcasecmp, name, system_charset_info, and type().

Referenced by change_cond_ref_to_const(), change_group_ref(), const_expression_in_where(), Item_func_match::eq(), Item_ref::eq(), remove_eq_conds(), and test_if_ref().

00625 {
00626   /*
00627     Note, that this is never TRUE if item is a Item_param:
00628     for all basic constants we have special checks, and Item_param's
00629     type() can be only among basic constant types.
00630   */
00631   return type() == item->type() && name && item->name &&
00632     !my_strcasecmp(system_charset_info,name,item->name);
00633 }

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virtual cond_result Item::eq_cmp_result ( ) const [inline, virtual]

Reimplemented in Item_func_eq, Item_func_equal, Item_func_ge, Item_func_gt, Item_func_le, Item_func_lt, Item_func_ne, and Item_func_like.

Definition at line 690 of file item.h.

References COND_OK.

00690 { return COND_OK; }

virtual Item* Item::equal_fields_propagator ( byte * arg ) [inline, virtual]

Reimplemented in Item_field.

Definition at line 820 of file item.h.

Referenced by build_equal_items_for_cond().

00820 { return this; }

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enum_field_types Item::field_type ( ) const [virtual]

Reimplemented in Item_field, Item_null, Item_param, Item_int, Item_decimal, Item_float, Item_string, Item_datetime, Item_return_int, Item_hex_string, Item_ref, Item_copy_string, Item_type_holder, Item_func_ifnull, Item_decimal_typecast, Item_func_get_user_var, Item_func_sp, Item_avg_field, Item_variance_field, Item_std_field, Item_sum_std, Item_sum_hybrid, Item_func_group_concat, Item_date, Item_date_func, Item_func_curtime, Item_func_sec_to_time, Item_date_add_interval, Item_date_typecast, Item_time_typecast, Item_datetime_typecast, Item_func_makedate, Item_func_add_time, Item_func_timediff, Item_func_maketime, Item_func_str_to_date, Item_proc, Item_proc_real, Item_proc_int, and Item_proc_string.

Definition at line 3923 of file item.cc.

References DBUG_ASSERT, DECIMAL_RESULT, FIELD_TYPE_DOUBLE, FIELD_TYPE_LONGLONG, FIELD_TYPE_NEWDECIMAL, INT_RESULT, MYSQL_TYPE_VARCHAR, REAL_RESULT, result_type(), ROW_RESULT, and STRING_RESULT.

Referenced by create_tmp_field_for_schema(), create_tmp_field_from_item(), Item_sum_hybrid::fix_fields(), Item_func_add_time::fix_length_and_dec(), Item_date_add_interval::fix_length_and_dec(), Item_sum_distinct::fix_length_and_dec(), Item_func_ifnull::fix_length_and_dec(), Item_func_year::get_monotonicity_info(), Item_func_to_days::get_monotonicity_info(), Item_type_holder::get_real_type(), Item_copy_string::Item_copy_string(), Item_sum::make_field(), make_field(), make_string_field(), send(), and tmp_table_field_from_field_type().

03924 {
03925   switch (result_type()) {
03926   case STRING_RESULT:  return MYSQL_TYPE_VARCHAR;
03927   case INT_RESULT:     return FIELD_TYPE_LONGLONG;
03928   case DECIMAL_RESULT: return FIELD_TYPE_NEWDECIMAL;
03929   case REAL_RESULT:    return FIELD_TYPE_DOUBLE;
03930   case ROW_RESULT:
03931   default:
03932     DBUG_ASSERT(0);
03933     return MYSQL_TYPE_VARCHAR;
03934   }
03935 }

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virtual Item_field* Item::filed_for_view_update ( ) [inline, virtual]

Reimplemented in Item_field, Item_ref, and Item_func_set_collation.

Definition at line 848 of file item.h.

Referenced by check_fields(), check_view_insertability(), Item_func_set_collation::filed_for_view_update(), fill_record(), and insert_view_fields().

00848 { return 0; }

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virtual bool Item::find_item_in_field_list_processor ( byte * arg ) [inline, virtual]

Reimplemented in Item_field.

Definition at line 792 of file item.h.

Referenced by get_best_group_min_max().

00792 { return 0; }

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bool Item::fix_fields	(	THD *	,
		Item **
	)			`[virtual]`

Reimplemented in Item_sp_variable, Item_name_const, Item_field, Item_ref, Item_direct_view_ref, Item_default_value, Item_insert_value, Item_trigger_field, Item_in_optimizer, Item_func_between, Item_func_if, Item_func_case, Item_func_in, Item_func_like, Item_cond, Item_equal, Item_func, Item_func_connection_id, Item_func_rand, Item_func_set_user_var, Item_user_var_as_out_param, Item_func_get_system_var, Item_func_match, Item_func_sp, Item_row, Item_func_user, Item_func_current_user, Item_func_make_set, Item_subselect, Item_in_subselect, Item_sum_num, Item_sum_hybrid, Item_func_group_concat, Item_func_convert_tz, and Item_sum_unique_users.

Definition at line 2924 of file item.cc.

References basic_const_item(), DBUG_ASSERT, FALSE, and fixed.

02925 {
02926 
02927   // We do not check fields which are fixed during construction
02928   DBUG_ASSERT(fixed == 0 || basic_const_item());
02929   fixed= 1;
02930   return FALSE;
02931 }

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uint Item::float_length ( uint decimals_par ) const [inline]

Definition at line 691 of file item.h.

References decimals, and NOT_FIXED_DEC.

00692   { return decimals != NOT_FIXED_DEC ? (DBL_DIG+2+decimals_par) : DBL_DIG+8;}

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virtual const char* Item::full_name ( ) const [inline, virtual]

Reimplemented in Item_ident.

Definition at line 654 of file item.h.

References name.

Referenced by check_group_min_max_predicates(), find_field_in_group_list(), find_order_in_list(), get_store_key(), and print().

00654 { return name ? name : "???"; }

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bool Item::get_date	(	TIME *	ltime,
		uint	fuzzydate
	)			`[virtual]`

Reimplemented in Item_field, Item_param, Item_ref, Item_direct_ref, Item_ref_null_helper, Item_func_curdate, Item_func_now, Item_func_sysdate_local, Item_func_from_days, Item_func_from_unixtime, Item_func_convert_tz, Item_date_add_interval, Item_date_typecast, Item_func_str_to_date, and Item_func_last_day.

Definition at line 775 of file item.cc.

References bzero, String::length(), my_charset_bin, MYSQL_TIMESTAMP_ERROR, String::ptr(), str_to_datetime_with_warn(), and val_str().

Referenced by Item_func::get_arg0_date(), Item_param::get_date(), get_date_result(), Event_timed::init_ends(), Event_timed::init_execute_at(), Event_timed::init_starts(), Item_date::save_in_field(), send(), Item_func_timestamp_diff::val_int(), Item_date::val_int(), and Item_date::val_str().

00776 {
00777   char buff[40];
00778   String tmp(buff,sizeof(buff), &my_charset_bin),*res;
00779   if (!(res=val_str(&tmp)) ||
00780       str_to_datetime_with_warn(res->ptr(), res->length(),
00781                                 ltime, fuzzydate) <= MYSQL_TIMESTAMP_ERROR)
00782   {
00783     bzero((char*) ltime,sizeof(*ltime));
00784     return 1;
00785   }
00786   return 0;
00787 }

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virtual bool Item::get_date_result	(	TIME *	ltime,
		uint	fuzzydate
	)			`[inline, virtual]`

Reimplemented in Item_field.

Definition at line 729 of file item.h.

References get_date().

00730   { return get_date(ltime,fuzzydate); }

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virtual enum_monotonicity_info Item::get_monotonicity_info ( ) const [inline, virtual]

Reimplemented in Item_field, Item_func_to_days, and Item_func_year.

Definition at line 547 of file item.h.

References NON_MONOTONIC.

00548   { return NON_MONOTONIC; }

virtual Settable_routine_parameter* Item::get_settable_routine_parameter ( ) [inline, virtual]

Reimplemented in Item_splocal, Item_trigger_field, and Item_func_get_user_var.

Definition at line 864 of file item.h.

00865   {
00866     return 0;
00867   }

bool Item::get_time ( TIME * ltime ) [virtual]

Reimplemented in Item_field, Item_param, and Item_time_typecast.

Definition at line 794 of file item.cc.

References bzero, String::length(), my_charset_bin, String::ptr(), str_to_time_with_warn(), and val_str().

Referenced by Item_func::get_arg0_time(), Item_param::get_time(), send(), Item_func_timediff::val_str(), and Item_func_add_time::val_str().

00795 {
00796   char buff[40];
00797   String tmp(buff,sizeof(buff),&my_charset_bin),*res;
00798   if (!(res=val_str(&tmp)) ||
00799       str_to_time_with_warn(res->ptr(), res->length(), ltime))
00800   {
00801     bzero((char*) ltime,sizeof(*ltime));
00802     return 1;
00803   }
00804   return 0;
00805 }

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virtual Field* Item::get_tmp_table_field ( ) [inline, virtual]

Reimplemented in Item_field, Item_result_field, and Item_ref.

Definition at line 651 of file item.h.

Referenced by change_to_use_tmp_fields(), end_write(), group_concat_key_cmp_with_order(), remove_duplicates(), and JOIN::rollup_make_fields().

00651 { return 0; }

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virtual Item* Item::get_tmp_table_item ( THD * thd ) [inline, virtual]

Reimplemented in Item_field, Item_ref, Item_func, Item_subselect, and Item_sum.

Definition at line 767 of file item.h.

References copy_or_same().

Referenced by change_refs_to_tmp_fields(), and change_to_use_tmp_fields().

00767 { return copy_or_same(thd); }

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void Item::init_make_field	(	Send_field *	tmp_field,
		enum enum_field_types	type
	)

Definition at line 3886 of file item.cc.

References BINARY_FLAG, Send_field::charsetnr, Send_field::col_name, DTCollation::collation, collation, Send_field::db_name, decimals, Send_field::decimals, Send_field::flags, Send_field::length, max_length, maybe_null, my_binary_compare, name, NOT_NULL_FLAG, charset_info_st::number, Send_field::org_col_name, Send_field::org_table_name, Send_field::table_name, Send_field::type, UNSIGNED_FLAG, and unsigned_flag.

Referenced by Item_proc::make_field(), Item_sum::make_field(), Item_func_sp::make_field(), Item_empty_string::make_field(), and make_field().

03888 {
03889   char *empty_name= (char*) "";
03890   tmp_field->db_name=           empty_name;
03891   tmp_field->org_table_name=    empty_name;
03892   tmp_field->org_col_name=      empty_name;
03893   tmp_field->table_name=        empty_name;
03894   tmp_field->col_name=          name;
03895   tmp_field->charsetnr=         collation.collation->number;
03896   tmp_field->flags=             (maybe_null ? 0 : NOT_NULL_FLAG) | 
03897                                 (my_binary_compare(collation.collation) ?
03898                                  BINARY_FLAG : 0);
03899   tmp_field->type=field_type;
03900   tmp_field->length=max_length;
03901   tmp_field->decimals=decimals;
03902   if (unsigned_flag)
03903     tmp_field->flags |= UNSIGNED_FLAG;
03904 }

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virtual bool Item::is_bool_func ( ) [inline, virtual]

Reimplemented in Item_bool_func, Item_bool_func2, Item_func_between, Item_func_in, Item_bool, Item_xpath_cast_bool, and Item_nodeset_to_const_comparator.

Definition at line 758 of file item.h.

Referenced by my_xpath_parse_AxisSpecifier_NodeTest_opt_Predicate_list(), and Item_nodeset_func_elementbyindex::val_nodeset().

00758 { return 0; }

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virtual bool Item::is_expensive_processor ( byte * arg ) [inline, virtual]

Reimplemented in Item_func.

Definition at line 794 of file item.h.

00794 { return 0; }

virtual bool Item::is_null ( ) [inline, virtual]

Reimplemented in Item_sp_variable, Item_name_const, Item_field, Item_null, Item_param, Item_ref, Item_direct_ref, Item_copy_string, Item_in_optimizer, Item_bool_func2, Item_func_nullif, Item_func, Item_func_numhybrid, Item_row, Item_subselect, Item_sum, Item_avg_field, and Item_variance_field.

Definition at line 739 of file item.h.

Referenced by Item_row::fix_fields(), in_row::get_value(), Item_in_optimizer::is_null(), Item_name_const::is_null(), Item_sp_variable::is_null(), join_read_always_key(), merge_key_fields(), Item_func_isnotnull::val_int(), and Item_func_isnull::val_int().

00739 { return 0; }

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virtual bool Item::is_result_field ( ) [inline, virtual]

Reimplemented in Item_null_result, Item_result_field, and Item_ref.

Definition at line 757 of file item.h.

Referenced by create_tmp_field_from_item(), and JOIN::rollup_write_data().

00757 { return 0; }

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virtual bool Item::is_splocal ( ) [inline, virtual]

Reimplemented in Item_splocal.

Definition at line 858 of file item.h.

00858 { return 0; } /* Needed for error checking */

void Item::make_field ( Send_field * field ) [virtual]

Reimplemented in Item_sp_variable, Item_ident_for_show, Item_field, Item_empty_string, Item_ref, Item_copy_string, Item_cache_row, Item_func_sp, Item_row, Item_sum, and Item_proc.

Definition at line 3906 of file item.cc.

References field_type(), and init_make_field().

Referenced by Item_copy_string::make_field(), Item_sp_variable::make_field(), and Protocol::send_fields().

03907 {
03908   init_make_field(tmp_field, field_type());
03909 }

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Field * Item::make_string_field ( TABLE * table )

Definition at line 3952 of file item.cc.

References DTCollation::collation, collation, CONVERT_IF_BIGGER_TO_BLOB, DBUG_ASSERT, field_type(), Field::init(), max_length, maybe_null, charset_info_st::mbmaxlen, MYSQL_TYPE_STRING, name, st_table::s, type(), and TYPE_HOLDER.

Referenced by Item_sum::create_tmp_field(), create_tmp_field_from_item(), Item_func::tmp_table_field(), and tmp_table_field_from_field_type().

03953 {
03954   Field *field;
03955   DBUG_ASSERT(collation.collation);
03956   if (max_length/collation.collation->mbmaxlen > CONVERT_IF_BIGGER_TO_BLOB)
03957     field= new Field_blob(max_length, maybe_null, name,
03958                           collation.collation);
03959   /* Item_type_holder holds the exact type, do not change it */
03960   else if (max_length > 0 &&
03961       (type() != Item::TYPE_HOLDER || field_type() != MYSQL_TYPE_STRING))
03962     field= new Field_varstring(max_length, maybe_null, name, table->s,
03963                                collation.collation);
03964   else
03965     field= new Field_string(max_length, maybe_null, name,
03966                             collation.collation);
03967   if (field)
03968     field->init(table);
03969   return field;
03970 }

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virtual Item* Item::neg_transformer ( THD * thd ) [inline, virtual]

Reimplemented in Item_bool_rowready_func2, Item_func_not, Item_func_not_all, Item_func_nop_all, Item_func_equal, Item_func_opt_neg, Item_func_isnull, Item_func_isnotnull, Item_cond_and, and Item_cond_or.

Definition at line 850 of file item.h.

References NULL.

Referenced by Item_cond::neg_arguments(), and negate_expression().

00850 { return NULL; }

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virtual Item* Item::new_item ( ) [inline, virtual]

Reimplemented in Item_null, Item_param, Item_int, Item_uint, Item_decimal, Item_float, Item_string, and Item_int_with_ref.

Definition at line 689 of file item.h.

Referenced by Item_field::get_tmp_table_item(), Item_cond::neg_arguments(), Item_func_not_all::neg_transformer(), Item_func_nop_all::neg_transformer(), split_sum_func2(), Item_func_make_set::transform(), Item_row::transform(), Item_func::transform(), Item_equal::transform(), Item_cond::transform(), and Item_default_value::transform().

00689 { return 0; }

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virtual void Item::no_rows_in_result ( ) [inline, virtual]

Reimplemented in Item_sum, Item_sum_sum, Item_sum_distinct, Item_sum_count, Item_sum_count_distinct, Item_sum_avg, Item_sum_variance, Item_sum_hybrid, and Item_func_group_concat.

Definition at line 763 of file item.h.

Referenced by end_send_group(), and return_zero_rows().

00763 {}

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virtual table_map Item::not_null_tables ( ) const [inline, virtual]

Reimplemented in Item_ref, Item_func_equal, Item_func_coalesce, Item_func_nullif, Item_func_case, Item_func_isnull, Item_func_isnotnull, Item_cond_and, Item_cond_or, Item_func, Item_func_coercibility, Item_func_match, Item_func_concat_ws, Item_func_charset, Item_func_collation, and Item_subselect.

Definition at line 682 of file item.h.

References used_tables().

Referenced by and_expressions(), Item_equal::fix_fields(), Item_cond::fix_fields(), Item_func_if::fix_fields(), Item_func_between::fix_fields(), Item_in_optimizer::fix_fields(), Item_in_optimizer::fix_left(), Item_func_make_set::fix_length_and_dec(), Item_func_interval::fix_length_and_dec(), and simplify_joins().

00682 { return used_tables(); }

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virtual bool Item::null_inside ( ) [inline, virtual]

Reimplemented in Item_cache_row, Item_row, and Item_singlerow_subselect.

Definition at line 843 of file item.h.

Referenced by Item_row::fix_fields().

00843 { return 0; }

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static void Item::operator delete	(	void *	ptr,
		MEM_ROOT *	mem_root
	)			`[inline, static]`

Definition at line 456 of file item.h.

00456 {}

static void Item::operator delete	(	void *	ptr,
		size_t	size
	)			`[inline, static]`

Definition at line 455 of file item.h.

References TRASH.

00455 { TRASH(ptr, size); }

static void* Item::operator new	(	size_t	size,
		MEM_ROOT *	mem_root
	)			`[inline, static]`

Definition at line 453 of file item.h.

References alloc_root().

00454   { return (void*) alloc_root(mem_root, (uint) size); }

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static void* Item::operator new ( size_t size ) [inline, static]

Definition at line 451 of file item.h.

References sql_alloc().

00452   { return (void*) sql_alloc((uint) size); }

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void Item::operator= ( Item & ) [private]

virtual void Item::print ( String * str_arg ) [inline, virtual]

Reimplemented in Item_splocal, Item_case_expr, Item_name_const, Item_ident, Item_null, Item_param, Item_int, Item_uint, Item_decimal, Item_float, Item_static_float_func, Item_string, Item_static_string_func, Item_ref, Item_ref_null_helper, Item_default_value, Item_insert_value, Item_trigger_field, Item_cache, Item_bool_func2, Item_func_not_all, Item_func_between, Item_func_strcmp, Item_func_nullif, Item_func_case, Item_func_in, Item_func_isnotnull, Item_func_regex, Item_cond, Item_equal, Item_func, Item_num_op, Item_func_signed, Item_func_unsigned, Item_decimal_typecast, Item_func_int_div, Item_func_locate, Item_func_bit, Item_func_bit_neg, Item_func_benchmark, Item_func_set_user_var, Item_func_get_user_var, Item_user_var_as_out_param, Item_func_match, Item_row, Item_func_trim, Item_func_make_set, Item_func_format, Item_func_binary, Item_func_conv_charset, Item_func_set_collation, Item_subselect, Item_maxmin_subselect, Item_exists_subselect, Item_in_subselect, Item_allany_subselect, Item_sum, Item_func_group_concat, Item_date_add_interval, Item_extract, Item_typecast, Item_char_typecast, Item_func_add_time, Item_func_timestamp_diff, Item_func_get_format, Item_func_unique_users, and Item_sum_unique_users.

Definition at line 719 of file item.h.

References String::append(), and full_name().

00719 { str_arg->append(full_name()); }

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void Item::print_item_w_name ( String * )

Definition at line 361 of file item.cc.

References String::append(), append_identifier(), current_thd, name, print(), STRING_WITH_LEN, and strlen().

00362 {
00363   print(str);
00364   if (name)
00365   {
00366     THD *thd= current_thd;
00367     str->append(STRING_WITH_LEN(" AS "));
00368     append_identifier(thd, str, name, (uint) strlen(name));
00369   }
00370 }

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void Item::quick_fix_field ( ) [inline]

Definition at line 527 of file item.h.

References fixed.

Referenced by add_cond_and_fix(), add_found_match_trig_cond(), JOIN::exec(), Item_func_match::init_search(), make_cond_for_info_schema(), make_cond_for_table(), and mysql_execute_command().

00527 { fixed= 1; }

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virtual Item* Item::real_item ( ) [inline, virtual]

Reimplemented in Item_ref, and Item_int_with_ref.

Definition at line 766 of file item.h.

Referenced by add_key_fields(), check_duplicate_names(), count_field_types(), create_tmp_field(), find_field_in_view(), Item_default_value::fix_fields(), Item_bool_func2::fix_length_and_dec(), get_mm_tree(), new_Cached_item(), opt_sum_query(), Item_ref::real_item(), split_sum_func2(), and uses_only_table_name_fields().

00766 { return this; }

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virtual bool Item::register_field_in_read_map ( byte * arg ) [inline, virtual]

Reimplemented in Item_field.

Definition at line 795 of file item.h.

Referenced by find_all_keys(), find_field_in_table_ref(), and register_used_fields().

00795 { return 0; }

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virtual bool Item::remove_dependence_processor ( byte * arg ) [inline, virtual]

Reimplemented in Item_ident.

Definition at line 788 of file item.h.

Referenced by Item_singlerow_subselect::select_transformer().

00788 { return 0; }

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virtual bool Item::remove_fixed ( byte * arg ) [inline, virtual]

Definition at line 789 of file item.h.

References fixed.

00789 { fixed= 0; return 0; }

void Item::rename ( char * new_name )

Definition at line 408 of file item.cc.

References name, and orig_name.

00409 {
00410   /*
00411     we can compare pointers to names here, because if name was not changed,
00412     pointer will be same
00413   */
00414   if (!orig_name && new_name != name)
00415     orig_name= name;
00416   name= new_name;
00417 }

virtual Item* Item::replace_equal_field ( byte * arg ) [inline, virtual]

Reimplemented in Item_field.

Definition at line 822 of file item.h.

Referenced by substitute_for_best_equal_field().

00822 { return this; }

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virtual bool Item::result_as_longlong ( ) [inline, virtual]

Reimplemented in Item_field, Item_ref, Item_date, Item_date_func, Item_func_curtime, Item_func_sec_to_time, Item_date_typecast, Item_time_typecast, Item_datetime_typecast, and Item_func_makedate.

Definition at line 875 of file item.h.

References FALSE.

00875 { return FALSE; }

virtual Item_result Item::result_type ( ) const [inline, virtual]

Reimplemented in Item_splocal, Item_case_expr, Item_name_const, Item_field, Item_null, Item_param, Item_int, Item_decimal, Item_string, Item_hex_string, Item_ref, Item_copy_string, Item_cache_int, Item_cache_real, Item_cache_decimal, Item_cache_str, Item_cache_row, Item_type_holder, Item_func_coalesce, Item_func_if, Item_func_nullif, Item_func_case, Item_real_func, Item_func_numhybrid, Item_int_func, Item_decimal_typecast, Item_func_min_max, Item_func_udf_str, Item_func_set_user_var, Item_func_get_user_var, Item_func_sp, Item_row, Item_str_func, Item_singlerow_subselect, Item_exists_subselect, Item_sum_int, Item_sum_sum, Item_sum_distinct, Item_avg_field, Item_variance_field, Item_sum_variance, Item_std_field, Item_sum_std, Item_sum_hybrid, Item_sum_udf_str, Item_func_group_concat, Item_func_month, Item_func_monthname, Item_func_weekday, Item_func_dayname, Item_date, Item_func_curtime, Item_func_now, Item_nodeset_func, Item_proc_real, Item_proc_int, and Item_proc_string.

Definition at line 537 of file item.h.

References REAL_RESULT.

Referenced by agg_cmp_type(), cast_to_int_type(), change_cond_ref_to_const(), sys_var_thd_storage_engine::check(), set_var::check(), sys_var_character_set::check(), sys_var_collation::check(), sys_var::check_enum(), check_equality(), sys_var::check_set(), Item_sum::create_tmp_field(), create_tmp_field_from_item(), decimal_precision(), field_is_equal_to_item(), field_type(), Item_num_op::find_num_type(), Item_sum_hybrid::fix_fields(), Item_func_set_user_var::fix_fields(), Item_char_typecast::fix_length_and_dec(), Item_func_field::fix_length_and_dec(), Item_func_min_max::fix_length_and_dec(), Item_equal::fix_length_and_dec(), Item_func_nullif::fix_length_and_dec(), Item_func_if::fix_length_and_dec(), Item_func_interval::fix_length_and_dec(), Item_type_holder::get_real_type(), new_Cached_item(), proc_analyse_init(), resolve_const_item(), Item_name_const::result_type(), Item_case_expr::result_type(), save_in_field(), sp_rcontext::set_case_expr(), set_row(), Item_cache_row::setup(), sp_get_item_value(), cmp_item_row::store_value(), Item_func::tmp_table_field(), val_bool(), and Item_func_interval::val_int().

00537 { return REAL_RESULT; }

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Item * Item::safe_charset_converter ( CHARSET_INFO * tocs ) [virtual]

Reimplemented in Item_num, Item_field, Item_null, Item_param, Item_static_float_func, Item_string, Item_static_string_func, Item_hex_string, and Item_func_sysconst.

Definition at line 636 of file item.cc.

References NULL, and Item_func_conv_charset::safe.

Referenced by mysql_prepare_table(), and Item_field::safe_charset_converter().

00637 {
00638   Item_func_conv_charset *conv= new Item_func_conv_charset(this, tocs, 1);
00639   return conv->safe ? conv : NULL;
00640 }

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int Item::save_in_field	(	Field *	field,
		bool	no_conversions
	)			`[virtual]`

Reimplemented in Item_sp_variable, Item_name_const, Item_field, Item_null, Item_param, Item_int, Item_uint, Item_decimal, Item_float, Item_string, Item_hex_string, Item_ref, Item_int_with_ref, Item_copy_string, Item_default_value, Item_insert_value, Item_date, Item_func_now, and Item_func_sysdate_local.

Definition at line 4175 of file item.cc.

References DTCollation::collation, collation, DECIMAL_RESULT, error, MAX_FIELD_WIDTH, null_value, REAL_RESULT, Field::result_type(), result_type(), set_field_to_null(), set_field_to_null_with_conversions(), Field::set_notnull(), String::set_quick(), Field::store(), str_value, STRING_RESULT, unsigned_flag, val_decimal(), val_int(), val_real(), val_str(), and value.

Referenced by Item_sum_distinct::add(), store_key_const_item::copy(), store_key_item::copy(), make_empty_rec(), mysql_ha_read(), Item_int_with_ref::save_in_field(), Item_name_const::save_in_field(), Item_sp_variable::save_in_field(), save_in_field_no_warnings(), Item_result_field::save_in_result_field(), save_org_in_field(), save_safe_in_field(), Item_trigger_field::set_value(), sp_eval_expr(), and store_val_in_field().

04176 {
04177   int error;
04178   if (result_type() == STRING_RESULT ||
04179       result_type() == REAL_RESULT &&
04180       field->result_type() == STRING_RESULT)
04181   {
04182     String *result;
04183     CHARSET_INFO *cs= collation.collation;
04184     char buff[MAX_FIELD_WIDTH];         // Alloc buffer for small columns
04185     str_value.set_quick(buff, sizeof(buff), cs);
04186     result=val_str(&str_value);
04187     if (null_value)
04188     {
04189       str_value.set_quick(0, 0, cs);
04190       return set_field_to_null_with_conversions(field, no_conversions);
04191     }
04192 
04193     /* NOTE: If null_value == FALSE, "result" must be not NULL.  */
04194 
04195     field->set_notnull();
04196     error=field->store(result->ptr(),result->length(),cs);
04197     str_value.set_quick(0, 0, cs);
04198   }
04199   else if (result_type() == REAL_RESULT)
04200   {
04201     double nr= val_real();
04202     if (null_value)
04203       return set_field_to_null(field);
04204     field->set_notnull();
04205     error=field->store(nr);
04206   }
04207   else if (result_type() == DECIMAL_RESULT)
04208   {
04209     my_decimal decimal_value;
04210     my_decimal *value= val_decimal(&decimal_value);
04211     if (null_value)
04212       return set_field_to_null(field);
04213     field->set_notnull();
04214     error=field->store_decimal(value);
04215   }
04216   else
04217   {
04218     longlong nr=val_int();
04219     if (null_value)
04220       return set_field_to_null_with_conversions(field, no_conversions);
04221     field->set_notnull();
04222     error=field->store(nr, unsigned_flag);
04223   }
04224   return error;
04225 }

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int Item::save_in_field_no_warnings	(	Field *	field,
		bool	no_conversions
	)

Definition at line 821 of file item.cc.

References CHECK_FIELD_IGNORE, dbug_tmp_restore_column_map(), dbug_tmp_use_all_columns(), st_table::in_use, save_in_field(), Field::table, and st_table::write_set.

00822 {
00823   int res;
00824   TABLE *table= field->table;
00825   THD *thd= table->in_use;
00826   enum_check_fields tmp= thd->count_cuted_fields;
00827   my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->write_set);
00828   thd->count_cuted_fields= CHECK_FIELD_IGNORE;
00829   res= save_in_field(field, no_conversions);
00830   thd->count_cuted_fields= tmp;
00831   dbug_tmp_restore_column_map(table->write_set, old_map);
00832   return res;
00833 }

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virtual void Item::save_in_result_field ( bool no_conversions ) [inline, virtual]

Reimplemented in Item_null_result, Item_result_field, and Item_ref.

Definition at line 759 of file item.h.

Referenced by JOIN::rollup_write_data().

00759 {}

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virtual void Item::save_org_in_field ( Field * field ) [inline, virtual]

Reimplemented in Item_field, and Item_ref.

Definition at line 531 of file item.h.

References save_in_field().

Referenced by end_update().

00532   { (void) save_in_field(field, 1); }

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virtual int Item::save_safe_in_field ( Field * field ) [inline, virtual]

Reimplemented in Item_null.

Definition at line 533 of file item.h.

References save_in_field().

00534   { return save_in_field(field, 1); }

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bool Item::send	(	Protocol *	protocol,
		String *	str
	)			`[virtual]`

Reimplemented in Item_sp_variable, Item_name_const, Item_field, Item_null, and Item_ref.

Definition at line 4541 of file item.cc.

References buffer, String::charset(), decimals, field_type(), get_date(), get_time(), String::length(), LINT_INIT, MYSQL_TYPE_BIT, MYSQL_TYPE_BLOB, MYSQL_TYPE_DATE, MYSQL_TYPE_DATETIME, MYSQL_TYPE_DECIMAL, MYSQL_TYPE_DOUBLE, MYSQL_TYPE_ENUM, MYSQL_TYPE_FLOAT, MYSQL_TYPE_GEOMETRY, MYSQL_TYPE_INT24, MYSQL_TYPE_LONG, MYSQL_TYPE_LONG_BLOB, MYSQL_TYPE_LONGLONG, MYSQL_TYPE_MEDIUM_BLOB, MYSQL_TYPE_NEWDECIMAL, MYSQL_TYPE_NULL, MYSQL_TYPE_SET, MYSQL_TYPE_SHORT, MYSQL_TYPE_STRING, MYSQL_TYPE_TIME, MYSQL_TYPE_TIMESTAMP, MYSQL_TYPE_TINY, MYSQL_TYPE_TINY_BLOB, MYSQL_TYPE_VAR_STRING, MYSQL_TYPE_VARCHAR, MYSQL_TYPE_YEAR, null_value, String::ptr(), Protocol::store(), Protocol::store_date(), Protocol::store_long(), Protocol::store_longlong(), Protocol::store_null(), Protocol::store_short(), Protocol::store_time(), Protocol::store_tiny(), TIME_FUZZY_DATE, type(), unsigned_flag, val_int(), val_real(), and val_str().

Referenced by mysql_ha_read(), Item_name_const::send(), Item_sp_variable::send(), and Protocol::send_fields().

04542 {
04543   bool result;
04544   enum_field_types type;
04545   LINT_INIT(result);                     // Will be set if null_value == 0
04546 
04547   switch ((type=field_type())) {
04548   default:
04549   case MYSQL_TYPE_NULL:
04550   case MYSQL_TYPE_DECIMAL:
04551   case MYSQL_TYPE_ENUM:
04552   case MYSQL_TYPE_SET:
04553   case MYSQL_TYPE_TINY_BLOB:
04554   case MYSQL_TYPE_MEDIUM_BLOB:
04555   case MYSQL_TYPE_LONG_BLOB:
04556   case MYSQL_TYPE_BLOB:
04557   case MYSQL_TYPE_GEOMETRY:
04558   case MYSQL_TYPE_STRING:
04559   case MYSQL_TYPE_VAR_STRING:
04560   case MYSQL_TYPE_VARCHAR:
04561   case MYSQL_TYPE_BIT:
04562   case MYSQL_TYPE_NEWDECIMAL:
04563   {
04564     String *res;
04565     if ((res=val_str(buffer)))
04566       result= protocol->store(res->ptr(),res->length(),res->charset());
04567     break;
04568   }
04569   case MYSQL_TYPE_TINY:
04570   {
04571     longlong nr;
04572     nr= val_int();
04573     if (!null_value)
04574       result= protocol->store_tiny(nr);
04575     break;
04576   }
04577   case MYSQL_TYPE_SHORT:
04578   case MYSQL_TYPE_YEAR:
04579   {
04580     longlong nr;
04581     nr= val_int();
04582     if (!null_value)
04583       result= protocol->store_short(nr);
04584     break;
04585   }
04586   case MYSQL_TYPE_INT24:
04587   case MYSQL_TYPE_LONG:
04588   {
04589     longlong nr;
04590     nr= val_int();
04591     if (!null_value)
04592       result= protocol->store_long(nr);
04593     break;
04594   }
04595   case MYSQL_TYPE_LONGLONG:
04596   {
04597     longlong nr;
04598     nr= val_int();
04599     if (!null_value)
04600       result= protocol->store_longlong(nr, unsigned_flag);
04601     break;
04602   }
04603   case MYSQL_TYPE_FLOAT:
04604   {
04605     float nr;
04606     nr= (float) val_real();
04607     if (!null_value)
04608       result= protocol->store(nr, decimals, buffer);
04609     break;
04610   }
04611   case MYSQL_TYPE_DOUBLE:
04612   {
04613     double nr= val_real();
04614     if (!null_value)
04615       result= protocol->store(nr, decimals, buffer);
04616     break;
04617   }
04618   case MYSQL_TYPE_DATETIME:
04619   case MYSQL_TYPE_DATE:
04620   case MYSQL_TYPE_TIMESTAMP:
04621   {
04622     TIME tm;
04623     get_date(&tm, TIME_FUZZY_DATE);
04624     if (!null_value)
04625     {
04626       if (type == MYSQL_TYPE_DATE)
04627         return protocol->store_date(&tm);
04628       else
04629         result= protocol->store(&tm);
04630     }
04631     break;
04632   }
04633   case MYSQL_TYPE_TIME:
04634   {
04635     TIME tm;
04636     get_time(&tm);
04637     if (!null_value)
04638       result= protocol->store_time(&tm);
04639     break;
04640   }
04641   }
04642   if (null_value)
04643     result= protocol->store_null();
04644   return result;
04645 }

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void Item::set_name	(	const char *	str,
		uint	length,
		CHARSET_INFO *	cs
	)

Definition at line 579 of file item.cc.

References charset_info_st::ctype, current_thd, ER, ER_REMOVED_SPACES, is_autogenerated_name, MAX_ALIAS_NAME, min, my_charset_same(), my_isgraph, name, name_length, push_warning_printf(), sql_strmake(), sql_strmake_with_convert(), system_charset_info, and MYSQL_ERROR::WARN_LEVEL_WARN.

Referenced by create_select_for_variable(), find_field_in_view(), Item_func_get_system_var::fix_fields(), Item_name_const::fix_fields(), Item_func_get_system_var::Item_func_get_system_var(), Item_string::Item_string(), Item_sp_variable::make_field(), make_schemata_old_format(), make_table_names_old_format(), and make_unique_view_field_name().

00580 {
00581   if (!length)
00582   {
00583     /* Empty string, used by AS or internal function like last_insert_id() */
00584     name= (char*) str;
00585     name_length= 0;
00586     return;
00587   }
00588   if (cs->ctype)
00589   {
00590     uint orig_len= length;
00591     /*
00592       This will probably need a better implementation in the future:
00593       a function in CHARSET_INFO structure.
00594     */
00595     while (length && !my_isgraph(cs,*str))
00596     {                                           // Fix problem with yacc
00597       length--;
00598       str++;
00599     }
00600     if (orig_len != length && !is_autogenerated_name)
00601       push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN,
00602                           ER_REMOVED_SPACES, ER(ER_REMOVED_SPACES),
00603                           str + length - orig_len);
00604 
00605   }
00606   if (!my_charset_same(cs, system_charset_info))
00607   {
00608     uint32 res_length;
00609     name= sql_strmake_with_convert(str, name_length= length, cs,
00610                                    MAX_ALIAS_NAME, system_charset_info,
00611                                    &res_length);
00612   }
00613   else
00614     name= sql_strmake(str, (name_length= min(length,MAX_ALIAS_NAME)));
00615 }

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virtual Item* Item::set_no_const_sub ( byte * arg ) [inline, virtual]

Reimplemented in Item_field.

Definition at line 821 of file item.h.

Referenced by Arg_comparator::set_compare_func().

00821 { return this; }

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virtual void Item::set_result_field ( Field * field ) [inline, virtual]

Reimplemented in Item_result_field, and Item_ref.

Definition at line 756 of file item.h.

Referenced by create_tmp_field_from_item().

00756 {}

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virtual void Item::split_sum_func	(	THD *	thd,
		Item **	ref_pointer_array,
		List< Item > &	fields
	)			`[inline, virtual]`

Reimplemented in Item_cond, Item_func, Item_row, and Item_func_make_set.

Definition at line 722 of file item.h.

Referenced by split_sum_func2().

00723                                                   {}

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void Item::split_sum_func2	(	THD *	thd,
		Item **	ref_pointer_array,
		List< Item > &	fields,
		Item **	ref,
		bool	skip_registered
	)

Definition at line 1154 of file item.cc.

References el(), base_list::elements, name, new_item(), PARAM_TABLE_BIT, List< T >::push_front(), real_item(), REF_ITEM, split_sum_func(), SUM_FUNC_ITEM, type(), used_tables(), Item_ref::VIEW_REF, and with_sum_func.

Referenced by JOIN::prepare(), Item_func_make_set::split_sum_func(), and Item_cond::split_sum_func().

01157 {
01158   /* An item of type Item_sum  is registered <=> ref_by != 0 */ 
01159   if (type() == SUM_FUNC_ITEM && skip_registered && 
01160       ((Item_sum *) this)->ref_by)
01161     return;                                                 
01162   if (type() != SUM_FUNC_ITEM && with_sum_func)
01163   {
01164     /* Will split complicated items and ignore simple ones */
01165     split_sum_func(thd, ref_pointer_array, fields);
01166   }
01167   else if ((type() == SUM_FUNC_ITEM || (used_tables() & ~PARAM_TABLE_BIT)) &&
01168            (type() != REF_ITEM ||
01169            ((Item_ref*)this)->ref_type() == Item_ref::VIEW_REF))
01170   {
01171     /*
01172       Replace item with a reference so that we can easily calculate
01173       it (in case of sum functions) or copy it (in case of fields)
01174 
01175       The test above is to ensure we don't do a reference for things
01176       that are constants (PARAM_TABLE_BIT is in effect a constant)
01177       or already referenced (for example an item in HAVING)
01178       Exception is Item_direct_view_ref which we need to convert to
01179       Item_ref to allow fields from view being stored in tmp table.
01180     */
01181     uint el= fields.elements;
01182     Item *new_item, *real_itm= real_item();
01183 
01184     ref_pointer_array[el]= real_itm;
01185     if (!(new_item= new Item_ref(&thd->lex->current_select->context,
01186                                  ref_pointer_array + el, 0, name)))
01187       return;                                   // fatal_error is set
01188     fields.push_front(real_itm);
01189     thd->change_item_tree(ref, new_item);
01190   }
01191 }

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virtual String* Item::str_result ( String * tmp ) [inline, virtual]

Reimplemented in Item_field, and Item_ref.

Definition at line 664 of file item.h.

References val_str().

Referenced by make_sortkey(), and Item_cache_str::store().

00664 { return val_str(tmp); }

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virtual const Item* Item::this_item ( ) const [inline, virtual]

Reimplemented in Item_splocal, and Item_case_expr.

Definition at line 829 of file item.h.

00829 { return this; }

virtual Item* Item::this_item ( ) [inline, virtual]

Reimplemented in Item_splocal, and Item_case_expr.

Definition at line 828 of file item.h.

Referenced by Item_sp_variable::fix_fields(), Item_func_date_format::fix_length_and_dec(), Item_sp_variable::is_null(), Item_sp_variable::make_field(), Item_sp_variable::save_in_field(), Item_sp_variable::send(), Item_sp_variable::val_decimal(), Item_sp_variable::val_int(), Item_sp_variable::val_real(), and Item_sp_variable::val_str().

00828 { return this; }

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virtual Item** Item::this_item_addr	(	THD *	thd,
		Item **	addr
	)			`[inline, virtual]`

Reimplemented in Item_splocal, and Item_case_expr.

Definition at line 835 of file item.h.

References addr().

Referenced by sp_prepare_func_item().

00835 { return addr; }

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virtual Field* Item::tmp_table_field ( TABLE * t_arg ) [inline, virtual]

Reimplemented in Item_field, Item_result_field, Item_func_ifnull, Item_func, Item_func_sp, Item_date, Item_date_func, Item_func_curtime, Item_func_sec_to_time, Item_date_typecast, Item_time_typecast, Item_datetime_typecast, Item_func_makedate, Item_func_add_time, Item_func_timediff, Item_func_maketime, and Item_func_str_to_date.

Definition at line 653 of file item.h.

Referenced by create_table_from_items().

00653 { return 0; }

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Field * Item::tmp_table_field_from_field_type	(	TABLE *	table,
		bool	fixed_length
	)

Definition at line 3984 of file item.cc.

References DTCollation::collation, collation, CONVERT_IF_BIGGER_TO_BLOB, DBUG_ASSERT, decimals, field_type(), make_string_field(), max_length, maybe_null, my_charset_bin, MYSQL_TYPE_BIT, MYSQL_TYPE_BLOB, MYSQL_TYPE_DATE, MYSQL_TYPE_DATETIME, MYSQL_TYPE_DECIMAL, MYSQL_TYPE_DOUBLE, MYSQL_TYPE_ENUM, MYSQL_TYPE_FLOAT, MYSQL_TYPE_GEOMETRY, MYSQL_TYPE_INT24, MYSQL_TYPE_LONG, MYSQL_TYPE_LONG_BLOB, MYSQL_TYPE_LONGLONG, MYSQL_TYPE_MEDIUM_BLOB, MYSQL_TYPE_NEWDATE, MYSQL_TYPE_NEWDECIMAL, MYSQL_TYPE_NULL, MYSQL_TYPE_SET, MYSQL_TYPE_SHORT, MYSQL_TYPE_STRING, MYSQL_TYPE_TIME, MYSQL_TYPE_TIMESTAMP, MYSQL_TYPE_TINY, MYSQL_TYPE_TINY_BLOB, MYSQL_TYPE_VAR_STRING, MYSQL_TYPE_VARCHAR, MYSQL_TYPE_YEAR, name, Field::NONE, NULL, TYPE_HOLDER, and unsigned_flag.

03985 {
03986   /*
03987     The field functions defines a field to be not null if null_ptr is not 0
03988   */
03989   uchar *null_ptr= maybe_null ? (uchar*) "" : 0;
03990   Field *field;
03991 
03992   switch (field_type()) {
03993   case MYSQL_TYPE_DECIMAL:
03994   case MYSQL_TYPE_NEWDECIMAL:
03995     field= new Field_new_decimal((char*) 0, max_length, null_ptr, 0,
03996                                  Field::NONE, name, decimals, 0,
03997                                  unsigned_flag);
03998     break;
03999   case MYSQL_TYPE_TINY:
04000     field= new Field_tiny((char*) 0, max_length, null_ptr, 0, Field::NONE,
04001                           name, 0, unsigned_flag);
04002     break;
04003   case MYSQL_TYPE_SHORT:
04004     field= new Field_short((char*) 0, max_length, null_ptr, 0, Field::NONE,
04005                            name, 0, unsigned_flag);
04006     break;
04007   case MYSQL_TYPE_LONG:
04008     field= new Field_long((char*) 0, max_length, null_ptr, 0, Field::NONE,
04009                           name, 0, unsigned_flag);
04010     break;
04011 #ifdef HAVE_LONG_LONG
04012   case MYSQL_TYPE_LONGLONG:
04013     field= new Field_longlong((char*) 0, max_length, null_ptr, 0, Field::NONE,
04014                               name, 0, unsigned_flag);
04015     break;
04016 #endif
04017   case MYSQL_TYPE_FLOAT:
04018     field= new Field_float((char*) 0, max_length, null_ptr, 0, Field::NONE,
04019                            name, decimals, 0, unsigned_flag);
04020     break;
04021   case MYSQL_TYPE_DOUBLE:
04022     field= new Field_double((char*) 0, max_length, null_ptr, 0, Field::NONE,
04023                             name, decimals, 0, unsigned_flag);
04024     break;
04025   case MYSQL_TYPE_NULL:
04026     field= new Field_null((char*) 0, max_length, Field::NONE,
04027                           name, &my_charset_bin);
04028     break;
04029   case MYSQL_TYPE_INT24:
04030     field= new Field_medium((char*) 0, max_length, null_ptr, 0, Field::NONE,
04031                             name, 0, unsigned_flag);
04032     break;
04033   case MYSQL_TYPE_NEWDATE:
04034   case MYSQL_TYPE_DATE:
04035     field= new Field_date(maybe_null, name, &my_charset_bin);
04036     break;
04037   case MYSQL_TYPE_TIME:
04038     field= new Field_time(maybe_null, name, &my_charset_bin);
04039     break;
04040   case MYSQL_TYPE_TIMESTAMP:
04041     field= new Field_timestamp(maybe_null, name, &my_charset_bin);
04042     break;
04043   case MYSQL_TYPE_DATETIME:
04044     field= new Field_datetime(maybe_null, name, &my_charset_bin);
04045     break;
04046   case MYSQL_TYPE_YEAR:
04047     field= new Field_year((char*) 0, max_length, null_ptr, 0, Field::NONE,
04048                           name);
04049     break;
04050   case MYSQL_TYPE_BIT:
04051     field= new Field_bit_as_char(NULL, max_length, null_ptr, 0,
04052                                  Field::NONE, name);
04053     break;
04054   default:
04055     /* This case should never be chosen */
04056     DBUG_ASSERT(0);
04057     /* If something goes awfully wrong, it's better to get a string than die */
04058   case MYSQL_TYPE_STRING:
04059     if (fixed_length && max_length < CONVERT_IF_BIGGER_TO_BLOB)
04060     {
04061       field= new Field_string(max_length, maybe_null, name,
04062                               collation.collation);
04063       break;
04064     }
04065     /* Fall through to make_string_field() */
04066   case MYSQL_TYPE_ENUM:
04067   case MYSQL_TYPE_SET:
04068   case MYSQL_TYPE_VAR_STRING:
04069   case MYSQL_TYPE_VARCHAR:
04070     return make_string_field(table);
04071   case MYSQL_TYPE_TINY_BLOB:
04072   case MYSQL_TYPE_MEDIUM_BLOB:
04073   case MYSQL_TYPE_LONG_BLOB:
04074   case MYSQL_TYPE_BLOB:
04075   case MYSQL_TYPE_GEOMETRY:
04076     if (this->type() == Item::TYPE_HOLDER)
04077       field= new Field_blob(max_length, maybe_null, name, collation.collation,
04078                             1);
04079     else
04080       field= new Field_blob(max_length, maybe_null, name, collation.collation);
04081     break;                                      // Blob handled outside of case
04082   }
04083   if (field)
04084     field->init(table);
04085   return field;
04086 }

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virtual void Item::top_level_item ( ) [inline, virtual]

Reimplemented in Item_bool_func2, Item_func_not_all, Item_func_opt_neg, Item_func_isnotnull, Item_cond, Item_cond_xor, and Item_in_subselect.

Definition at line 751 of file item.h.

Referenced by add_join_on(), JOIN::exec(), Item_cond::fix_fields(), Item_func_if::fix_fields(), Item_in_subselect::row_value_transformer(), and simplify_joins().

00751 {}

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virtual Item* Item::transform	(	Item_transformer	transformer,
		byte *	arg
	)			`[inline, virtual]`

Reimplemented in Item_default_value, Item_cond, Item_equal, Item_func, Item_row, and Item_func_make_set.

Definition at line 777 of file item.h.

Referenced by Item_func_make_set::transform(), Item_func::transform(), Item_equal::transform(), Item_cond::transform(), and Item_default_value::transform().

00778   {
00779     return (this->*transformer)(arg);
00780   }

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virtual void Item::traverse_cond	(	Cond_traverser	traverser,
		void *	arg,
		traverse_order	order
	)			`[inline, virtual]`

Definition at line 782 of file item.h.

Referenced by Item_cond::traverse_cond().

00784    {
00785      (*traverser)(this, arg);
00786    }

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virtual enum Type Item::type ( ) const [pure virtual]

Implemented in Item_splocal, Item_case_expr, Item_name_const, Item_ident_for_show, Item_field, Item_null, Item_param, Item_int, Item_decimal, Item_float, Item_string, Item_hex_string, Item_ref, Item_copy_string, Item_default_value, Item_trigger_field, Item_cache, Item_type_holder, Item_cond, Item_cond_xor, Item_func, Item_user_var_as_out_param, Item_row, Item_subselect, Item_sum, Item_avg_field, Item_variance_field, Item_std_field, Item_nodeset_func, Item_nodeset_to_const_comparator, and Item_proc.

Referenced by add_field_to_list(), add_key_fields(), change_group_ref(), change_to_use_tmp_fields(), check_duplicate_names(), check_equality(), check_group_min_max_predicates(), count_field_types(), create_comparator(), create_table_from_items(), create_tmp_field(), create_tmp_table(), Item_type_holder::display_length(), Item_char_typecast::eq(), Item_extract::eq(), Item_func_date_format::eq(), Item_func_set_collation::eq(), Item_func_match::eq(), Item_func_get_user_var::eq(), Item_func::eq(), Item_trigger_field::eq(), Item_insert_value::eq(), Item_default_value::eq(), Item_direct_view_ref::eq(), Item_hex_string::eq(), Item_float::eq(), Item_int::eq(), Item_param::eq(), Item_null::eq(), Item_decimal::eq(), Item_field::eq(), Item_string::eq(), eq(), find_field_in_group_list(), find_field_in_item_list(), find_field_in_table_ref(), find_order_in_list(), Item_sum_hybrid::fix_fields(), Item_func_match::fix_fields(), Item_func_set_user_var::fix_fields(), Item_cond::fix_fields(), Item_insert_value::fix_fields(), Item_default_value::fix_fields(), Item_field::fix_fields(), Item_func_date_format::fix_length_and_dec(), Item_bool_func2::fix_length_and_dec(), get_best_group_min_max(), Item_type_holder::get_full_info(), get_mm_tree(), Item_type_holder::get_real_type(), get_store_key(), create_field::init(), make_cond_for_table(), make_string_field(), JOIN::make_sum_func_list(), mark_common_columns(), mark_select_range_as_dependent(), my_xpath_parse_UnionExpr(), mysql_load(), nametestfunc(), negate_expression(), new_Cached_item(), nodeset2bool(), opt_sum_query(), proc_analyse_init(), read_sep_field(), remove_additional_cond(), resolve_const_item(), JOIN::rollup_init(), JOIN::rollup_make_fields(), JOIN::rollup_write_data(), send(), set_var::set_var(), setup_wild(), simple_pred(), split_sum_func2(), test_if_ref(), JOIN::test_in_subselect(), Item_case_expr::type(), Item_name_const::type(), update_ref_and_keys(), and uses_only_table_name_fields().

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virtual void Item::update_used_tables ( ) [inline, virtual]

Reimplemented in Item_func_isnull, Item_is_not_null_test, Item_cond, Item_equal, Item_func, Item_func_rand, Item_func_sleep, Item_func_match, Item_row, Item_func_make_set, Item_subselect, Item_sum, and Item_func_sysdate_local.

Definition at line 721 of file item.h.

Referenced by add_found_match_trig_cond(), build_equal_items_for_cond(), JOIN::exec(), opt_sum_query(), JOIN::optimize(), Item_func_make_set::update_used_tables(), Item_func_isnull::update_used_tables(), Item_equal::update_used_tables(), Item_is_not_null_test::update_used_tables(), and Item_cond::update_used_tables().

00721 {}

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virtual table_map Item::used_tables ( ) const [inline, virtual]

Reimplemented in Item_field, Item_param, Item_result_field, Item_ref, Item_ref_null_helper, Item_copy_string, Item_default_value, Item_insert_value, Item_trigger_field, Item_cache, Item_is_not_null_test, Item_cond, Item_func, Item_func_get_user_var, Item_row, Item_subselect, Item_sum, Item_sum_count, and Item_sum_hybrid.

Definition at line 670 of file item.h.

Referenced by add_ft_keys(), add_key_fields(), and_expressions(), check_insert_fields(), const_during_execution(), const_item(), Item_row::fix_fields(), Item_func_match::fix_fields(), Item_equal::fix_fields(), Item_cond::fix_fields(), Item_in_optimizer::fix_fields(), Item_in_optimizer::fix_left(), Item_func_make_set::fix_length_and_dec(), get_sort_by_table(), init_read_record(), mark_select_range_as_dependent(), mysql_ha_read(), not_null_tables(), opt_sum_query(), JOIN::optimize(), simplify_joins(), split_sum_func2(), Item_func_make_set::update_used_tables(), Item_row::update_used_tables(), Item_func::update_used_tables(), Item_equal::update_used_tables(), Item_cond::update_used_tables(), and Item_func_concat::val_str().

00670 { return (table_map) 0L; }

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bool Item::val_bool ( ) [virtual]

Reimplemented in Item_ref, Item_direct_ref, Item_ref_null_helper, Item_singlerow_subselect, Item_exists_subselect, and Item_in_subselect.

Definition at line 176 of file item.cc.

References DBUG_ASSERT, DECIMAL_RESULT, INT_RESULT, my_decimal_is_zero(), REAL_RESULT, result_type(), ROW_RESULT, STRING_RESULT, val_decimal(), val_int(), and val_real().

Referenced by sp_instr_jump_if_not::exec_core(), Item_func_case::find_item(), Item_singlerow_subselect::val_bool(), val_bool_result(), Item_func_if::val_decimal(), Item_cond_or::val_int(), Item_cond_and::val_int(), Item_func_if::val_int(), Item_func_not_all::val_int(), Item_func_not::val_int(), Item_func_if::val_real(), and Item_func_if::val_str().

00177 {
00178   switch(result_type()) {
00179   case INT_RESULT:
00180     return val_int() != 0;
00181   case DECIMAL_RESULT:
00182   {
00183     my_decimal decimal_value;
00184     my_decimal *val= val_decimal(&decimal_value);
00185     if (val)
00186       return !my_decimal_is_zero(val);
00187     return 0;
00188   }
00189   case REAL_RESULT:
00190   case STRING_RESULT:
00191     return val_real() != 0.0;
00192   case ROW_RESULT:
00193   default:
00194     DBUG_ASSERT(0);
00195     return 0;                                   // Wrong (but safe)
00196   }
00197 }

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virtual bool Item::val_bool_result ( ) [inline, virtual]

Reimplemented in Item_field, and Item_ref.

Definition at line 667 of file item.h.

References val_bool().

Referenced by Item_in_optimizer::val_int().

00667 { return val_bool(); }

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virtual my_decimal* Item::val_decimal ( my_decimal * decimal_buffer ) [pure virtual]

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my_decimal * Item::val_decimal_from_int ( my_decimal * decimal_value )

Definition at line 241 of file item.cc.

References E_DEC_FATAL_ERROR, int2my_decimal(), null_value, unsigned_flag, and val_int().

Referenced by Item_sum_int::val_decimal().

00242 {
00243   longlong nr= val_int();
00244   if (null_value)
00245     return 0;
00246   int2my_decimal(E_DEC_FATAL_ERROR, nr, unsigned_flag, decimal_value);
00247   return decimal_value;
00248 }

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my_decimal * Item::val_decimal_from_real ( my_decimal * decimal_value )

Definition at line 231 of file item.cc.

References double2my_decimal(), E_DEC_FATAL_ERROR, null_value, and val_real().

Referenced by Item_variance_field::val_decimal(), Item_std_field::val_decimal(), Item_avg_field::val_decimal(), Item_sum_variance::val_decimal(), Item_sum_sum::val_decimal(), and Item_sum_num::val_decimal().

00232 {
00233   double nr= val_real();
00234   if (null_value)
00235     return 0;
00236   double2my_decimal(E_DEC_FATAL_ERROR, nr, decimal_value);
00237   return (decimal_value);
00238 }

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my_decimal * Item::val_decimal_from_string ( my_decimal * decimal_value )

Definition at line 251 of file item.cc.

References String::c_ptr(), String::charset(), current_thd, E_DEC_BAD_NUM, E_DEC_FATAL_ERROR, ER, ER_TRUNCATED_WRONG_VALUE, String::length(), String::ptr(), push_warning_printf(), str2my_decimal(), str_value, val_str(), and MYSQL_ERROR::WARN_LEVEL_WARN.

Referenced by Item_func_group_concat::val_decimal(), and Item_string::val_decimal().

00252 {
00253   String *res;
00254   char *end_ptr;
00255   if (!(res= val_str(&str_value)))
00256     return 0;                                   // NULL or EOM
00257 
00258   end_ptr= (char*) res->ptr()+ res->length();
00259   if (str2my_decimal(E_DEC_FATAL_ERROR & ~E_DEC_BAD_NUM,
00260                      res->ptr(), res->length(), res->charset(),
00261                      decimal_value) & E_DEC_BAD_NUM)
00262   {
00263     push_warning_printf(current_thd, MYSQL_ERROR::WARN_LEVEL_WARN,
00264                         ER_TRUNCATED_WRONG_VALUE,
00265                         ER(ER_TRUNCATED_WRONG_VALUE), "DECIMAL",
00266                         str_value.c_ptr());
00267   }
00268   return decimal_value;
00269 }

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virtual my_decimal* Item::val_decimal_result ( my_decimal * val ) [inline, virtual]

Reimplemented in Item_field, and Item_ref.

Definition at line 665 of file item.h.

References val_decimal().

Referenced by make_sortkey(), and Item_cache_decimal::store().

00666   { return val_decimal(val); }

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virtual longlong Item::val_int ( ) [pure virtual]

Implemented in Item_sp_variable, Item_name_const, Item_ident_for_show, Item_field, Item_null, Item_param, Item_int, Item_decimal, Item_float, Item_string, Item_hex_string, Item_ref, Item_direct_ref, Item_ref_null_helper, Item_copy_string, Item_cache_int, Item_cache_real, Item_cache_decimal, Item_cache_str, Item_cache_row, Item_type_holder, Item_in_optimizer, Item_func_not, Item_func_trig_cond, Item_func_not_all, Item_func_nop_all, Item_func_eq, Item_func_equal, Item_func_ge, Item_func_gt, Item_func_le, Item_func_lt, Item_func_ne, Item_func_between, Item_func_strcmp, Item_func_interval, Item_func_if, Item_func_nullif, Item_func_case, Item_func_in, Item_func_isnull, Item_is_not_null_test, Item_func_isnotnull, Item_func_like, Item_func_regex, Item_equal, Item_cond_and, Item_cond_or, Item_cond_xor, Item_real_func, Item_func_numhybrid, Item_func_connection_id, Item_func_signed, Item_func_unsigned, Item_decimal_typecast, Item_func_int_div, Item_func_sign, Item_func_min_max, Item_func_length, Item_func_bit_length, Item_func_char_length, Item_func_coercibility, Item_func_locate, Item_func_field, Item_func_ascii, Item_func_ord, Item_func_find_in_set, Item_func_bit_or, Item_func_bit_and, Item_func_bit_count, Item_func_shift_left, Item_func_shift_right, Item_func_bit_neg, Item_func_last_insert_id, Item_func_benchmark, Item_func_sleep, Item_func_udf_int, Item_func_udf_str, Item_func_get_lock, Item_func_release_lock, Item_master_pos_wait, Item_func_set_user_var, Item_func_get_user_var, Item_user_var_as_out_param, Item_func_get_system_var, Item_func_inet_aton, Item_func_match, Item_func_bit_xor, Item_func_is_free_lock, Item_func_is_used_lock, Item_func_row_count, Item_func_sp, Item_func_found_rows, Item_row, Item_str_func, Item_func_elt, Item_func_crc32, Item_func_uncompressed_length, Item_singlerow_subselect, Item_exists_subselect, Item_in_subselect, Item_sum_num, Item_sum_sum, Item_sum_distinct, Item_sum_count, Item_sum_count_distinct, Item_avg_field, Item_sum_avg, Item_variance_field, Item_sum_hybrid, Item_sum_bit, Item_sum_udf_int, Item_sum_udf_str, Item_func_group_concat, Item_func_period_add, Item_func_period_diff, Item_func_to_days, Item_func_dayofmonth, Item_func_month, Item_func_dayofyear, Item_func_hour, Item_func_minute, Item_func_quarter, Item_func_second, Item_func_week, Item_func_yearweek, Item_func_year, Item_func_weekday, Item_func_unix_timestamp, Item_func_time_to_sec, Item_date, Item_func_curtime, Item_func_curdate, Item_func_now, Item_func_sysdate_local, Item_func_from_unixtime, Item_func_convert_tz, Item_func_sec_to_time, Item_date_add_interval, Item_extract, Item_date_typecast, Item_time_typecast, Item_datetime_typecast, Item_func_makedate, Item_func_microsecond, Item_func_timestamp_diff, Item_xpath_cast_bool, Item_func_xpath_position, Item_func_xpath_count, Item_nodeset_to_const_comparator, Item_proc_real, Item_proc_int, and Item_proc_string.

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longlong Item::val_int_from_decimal ( )

Definition at line 284 of file item.cc.

References E_DEC_FATAL_ERROR, my_decimal2int(), null_value, unsigned_flag, val_decimal(), and value.

00285 {
00286   /* Note that fix_fields may not be called for Item_avg_field items */
00287   longlong result;
00288   my_decimal value, *dec_val= val_decimal(&value);
00289   if (null_value)
00290     return 0;
00291   my_decimal2int(E_DEC_FATAL_ERROR, dec_val, unsigned_flag, &result);
00292   return result;
00293 }

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virtual longlong Item::val_int_result ( ) [inline, virtual]

Reimplemented in Item_field, and Item_ref.

Definition at line 663 of file item.h.

References val_int().

Referenced by make_sortkey(), and Item_cache_int::store().

00663 { return val_int(); }

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virtual String* Item::val_nodeset ( String * ) [inline, virtual]

Reimplemented in Item_nodeset_func_rootelement, Item_nodeset_func_union, Item_nodeset_func_selfbyname, Item_nodeset_func_childbyname, Item_nodeset_func_descendantbyname, Item_nodeset_func_ancestorbyname, Item_nodeset_func_parentbyname, Item_nodeset_func_attributebyname, Item_nodeset_func_predicate, Item_nodeset_func_elementbyindex, and Item_nodeset_context_cache.

Definition at line 640 of file item.h.

Referenced by Item_nodeset_func::prepare(), Item_nodeset_to_const_comparator::val_int(), Item_func_xpath_count::val_int(), Item_func_xpath_position::val_int(), Item_xpath_cast_bool::val_int(), Item_nodeset_func_union::val_nodeset(), Item_func_xpath_sum::val_real(), Item_func_xml_update::val_str(), and Item_nodeset_func::val_str().

00640 { return 0; }

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virtual double Item::val_real ( ) [pure virtual]

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double Item::val_real_from_decimal ( )

Definition at line 272 of file item.cc.

References E_DEC_FATAL_ERROR, my_decimal2double(), null_value, and val_decimal().

Referenced by Item_variance_field::val_real(), Item_avg_field::val_real(), and Item_sum_variance::val_real().

00273 {
00274   /* Note that fix_fields may not be called for Item_avg_field items */
00275   double result;
00276   my_decimal value_buff, *dec_val= val_decimal(&value_buff);
00277   if (null_value)
00278     return 0.0;
00279   my_decimal2double(E_DEC_FATAL_ERROR, dec_val, &result);
00280   return result;
00281 }

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virtual double Item::val_result ( ) [inline, virtual]

Reimplemented in Item_field, and Item_ref.

Definition at line 662 of file item.h.

References val_real().

Referenced by make_sortkey(), and Item_cache_real::store().

00662 { return val_real(); }

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virtual String* Item::val_str ( String * str ) [pure virtual]

Implemented in Item_sp_variable, Item_name_const, Item_ident_for_show, Item_field, Item_null, Item_param, Item_int, Item_uint, Item_decimal, Item_float, Item_string, Item_hex_string, Item_ref, Item_direct_ref, Item_ref_null_helper, Item_copy_string, Item_cache_int, Item_cache_real, Item_cache_decimal, Item_cache_str, Item_cache_row, Item_type_holder, Item_func_if, Item_func_nullif, Item_func_case, Item_real_func, Item_func_numhybrid, Item_int_func, Item_decimal_typecast, Item_func_min_max, Item_func_udf_str, Item_func_set_user_var, Item_func_get_user_var, Item_user_var_as_out_param, Item_func_get_system_var, Item_func_sp, Item_row, Item_func_md5, Item_func_sha, Item_func_aes_encrypt, Item_func_aes_decrypt, Item_func_concat, Item_func_concat_ws, Item_func_reverse, Item_func_replace, Item_func_insert, Item_str_conv, Item_func_left, Item_func_right, Item_func_substr, Item_func_substr_index, Item_func_trim, Item_func_ltrim, Item_func_rtrim, Item_func_password, Item_func_old_password, Item_func_des_encrypt, Item_func_des_decrypt, Item_func_encrypt, Item_func_encode, Item_func_decode, Item_func_database, Item_func_user, Item_func_soundex, Item_func_elt, Item_func_make_set, Item_func_format, Item_func_char, Item_func_repeat, Item_func_rpad, Item_func_lpad, Item_func_conv, Item_func_hex, Item_func_unhex, Item_func_binary, Item_load_file, Item_func_export_set, Item_func_inet_ntoa, Item_func_quote, Item_func_conv_charset, Item_func_set_collation, Item_func_charset, Item_func_collation, Item_func_compress, Item_func_uncompress, Item_func_uuid, Item_singlerow_subselect, Item_exists_subselect, Item_in_subselect, Item_sum_num, Item_sum_int, Item_sum_sum, Item_sum_distinct, Item_avg_field, Item_sum_avg, Item_variance_field, Item_sum_hybrid, Item_sum_udf_str, Item_func_group_concat, Item_func_month, Item_func_monthname, Item_func_weekday, Item_func_dayname, Item_date, Item_func_curtime, Item_func_curdate, Item_func_now, Item_func_sysdate_local, Item_func_date_format, Item_func_from_unixtime, Item_func_convert_tz, Item_func_sec_to_time, Item_date_add_interval, Item_typecast, Item_char_typecast, Item_date_typecast, Item_time_typecast, Item_datetime_typecast, Item_func_makedate, Item_func_add_time, Item_func_timediff, Item_func_maketime, Item_func_get_format, Item_func_str_to_date, Item_nodeset_func, Item_func_xml_extractvalue, Item_func_xml_update, Item_proc_real, Item_proc_int, and Item_proc_string.

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String * Item::val_string_from_decimal ( String * str )

Definition at line 220 of file item.cc.

References decimals, E_DEC_FATAL_ERROR, FALSE, my_decimal2string(), my_decimal_round(), null_value, and val_decimal().

Referenced by Item_variance_field::val_str(), Item_avg_field::val_str(), Item_sum_avg::val_str(), and Item_sum_sum::val_str().

00221 {
00222   my_decimal dec_buf, *dec= val_decimal(&dec_buf);
00223   if (null_value)
00224     return 0;
00225   my_decimal_round(E_DEC_FATAL_ERROR, dec, decimals, FALSE, &dec_buf);
00226   my_decimal2string(E_DEC_FATAL_ERROR, &dec_buf, 0, 0, 0, str);
00227   return str;
00228 }

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String * Item::val_string_from_int ( String * str )

Definition at line 210 of file item.cc.

References my_charset_bin, null_value, String::set_int(), unsigned_flag, and val_int().

Referenced by Item_sum_int::val_str().

00211 {
00212   longlong nr= val_int();
00213   if (null_value)
00214     return 0;
00215   str->set_int(nr, unsigned_flag, &my_charset_bin);
00216   return str;
00217 }

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String * Item::val_string_from_real ( String * str )

Definition at line 200 of file item.cc.

References decimals, my_charset_bin, null_value, String::set_real(), and val_real().

Referenced by Item_variance_field::val_str(), Item_avg_field::val_str(), Item_sum_avg::val_str(), Item_sum_sum::val_str(), and Item_sum_num::val_str().

00201 {
00202   double nr= val_real();
00203   if (null_value)
00204     return 0;                                   /* purecov: inspected */
00205   str->set_real(nr,decimals, &my_charset_bin);
00206   return str;
00207 }

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ulonglong Item::val_uint ( ) [inline]

Definition at line 577 of file item.h.

References val_int().

00577 { return (ulonglong) val_int(); }

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virtual bool Item::walk	(	Item_processor	processor,
		bool	walk_subquery,
		byte *	arg
	)			`[inline, virtual]`

Reimplemented in Item_ref, Item_default_value, Item_insert_value, Item_cond, Item_equal, Item_func, Item_row, Item_func_make_set, Item_subselect, and Item_sum.

Definition at line 772 of file item.h.

Referenced by add_group_and_distinct_keys(), find_all_keys(), find_field_in_table_ref(), get_best_group_min_max(), Item_singlerow_subselect::select_transformer(), Item_subselect::walk(), Item_func_make_set::walk(), Item_equal::walk(), Item_cond::walk(), Item_insert_value::walk(), and Item_default_value::walk().

00773   {
00774     return (this->*processor)(arg);
00775   }

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Member Data Documentation

DTCollation Item::collation

Definition at line 494 of file item.h.

uint8 Item::decimals

Definition at line 486 of file item.h.

my_bool Item::fixed

Definition at line 491 of file item.h.

my_bool Item::is_autogenerated_name

Definition at line 492 of file item.h.

Referenced by check_duplicate_names(), and set_name().

uint8 Item::marker

Definition at line 486 of file item.h.

Referenced by cleanup(), create_distinct_group(), create_tmp_table(), Item(), and setup_group().

uint32 Item::max_length

Definition at line 484 of file item.h.

my_bool Item::maybe_null

Definition at line 487 of file item.h.

my_string Item::name

Reimplemented in Item_func_units, Item_func_set_user_var, Item_func_get_user_var, and Item_user_var_as_out_param.

Definition at line 480 of file item.h.

Referenced by change_group_ref(), change_to_use_tmp_fields(), check_duplicate_names(), check_fields(), cleanup(), create_tmp_field(), Item_sum_unique_users::create_tmp_field(), Item_sum_variance::create_tmp_field(), Item_sum_avg::create_tmp_field(), Item_sum_hybrid::create_tmp_field(), Item_sum::create_tmp_field(), create_tmp_field_for_schema(), create_tmp_field_from_item(), Item_field::eq(), eq(), fill_record(), find_field_in_tables(), Item_subselect::fix_fields(), Item_func_get_system_var::fix_fields(), Item_default_value::fix_fields(), Item_ref::fix_fields(), full_name(), Item_ident::full_name(), init_make_field(), Item_avg_field::Item_avg_field(), Item_bin_string::Item_bin_string(), Item_copy_string::Item_copy_string(), Item_decimal::Item_decimal(), Item_empty_string::Item_empty_string(), Item_field::Item_field(), Item_float::Item_float(), Item_hex_string::Item_hex_string(), Item_ident::Item_ident(), Item_int::Item_int(), Item_null::Item_null(), Item_proc::Item_proc(), Item_variance_field::Item_variance_field(), Item_type_holder::join_types(), Load_log_event::Load_log_event(), Item_sum::make_field(), Item_sp_variable::make_field(), Item_ref::make_field(), Item_field::make_field(), Item_type_holder::make_field_by_type(), make_string_field(), make_unique_view_field_name(), mysql_schema_table(), mysql_show_grants(), Item_string::new_item(), Item_float::new_item(), Item_decimal::new_item(), Item_uint::new_item(), Item_int::new_item(), Item_null::new_item(), Item_int_with_ref::new_item(), Item_param::new_item(), Item_ref::print(), Item_ident::print(), print_item_w_name(), remove_additional_cond(), rename(), Item_field::reset_field(), resolve_const_item(), resolve_ref_in_select_and_group(), set_name(), st_table_list::setup_underlying(), Item_in_subselect::single_value_transformer(), Item_func_sp::sp_result_field(), split_sum_func2(), Item_func_sp::tmp_table_field(), Item_func::tmp_table_field(), tmp_table_field_from_field_type(), Item_decimal_typecast::val_decimal(), Item_func_dayname::val_str(), and ~Item().

uint Item::name_length

Definition at line 485 of file item.h.

Referenced by set_name().

Item* Item::next

Reimplemented in Item_sum.

Definition at line 483 of file item.h.

Referenced by cleanup_items(), create_tmp_table(), free_items(), Item(), and make_unireg_sortorder().

my_bool Item::null_value

Definition at line 488 of file item.h.

my_string Item::orig_name

Definition at line 482 of file item.h.

Referenced by cleanup(), make_unique_view_field_name(), and rename().

uint Item::rsize

Definition at line 473 of file item.h.

String Item::str_value

Definition at line 479 of file item.h.

Referenced by Item_string::append(), sys_var_thd_lc_time_names::check(), sys_var_str::check(), Item_param::convert_str_value(), Item_copy_string::copy(), create_func_space(), Item_hex_string::eq(), Item_param::eq(), Item_string::eq(), Item_func_date_format::fix_length_and_dec(), Ndb_item::get_val(), Item_func_user::init(), Item_bin_string::Item_bin_string(), Item_func_conv_charset::Item_func_conv_charset(), Item_func_user::Item_func_user(), Item_hex_string::Item_hex_string(), Item_string::Item_string(), Item_string::new_item(), Item_param::new_item(), Ndb_item::pack_length(), Item_func_set_collation::print(), Item_string::print(), Item_decimal::print(), Item_uint::print(), Item_int::print(), Item_param::query_val_str(), Item_param::reset(), Item_func_sysconst::safe_charset_converter(), Item_hex_string::safe_charset_converter(), Item_static_string_func::safe_charset_converter(), Item_param::safe_charset_converter(), Item_string::safe_charset_converter(), Item_static_float_func::safe_charset_converter(), Item_num::safe_charset_converter(), Item_hex_string::save_in_field(), Item_string::save_in_field(), save_in_field(), Item_copy_string::save_in_field(), Item_param::save_in_field(), select_describe(), Item_proc_string::set(), Item_param::set_longdata(), Item_param::set_str(), Item_string::set_str_with_copy(), Item_ref::str_result(), Item_field::str_result(), sys_check_ftb_syntax(), sys_check_log_path(), sys_update_ftb_syntax(), sys_var_thd_dbug::update(), update_sys_var_str(), update_sys_var_str_path(), Item_proc_string::val_decimal(), Item_func_numhybrid::val_decimal(), Item_copy_string::val_decimal(), Item_param::val_decimal(), val_decimal_from_string(), Item_proc_string::val_int(), Item_nodeset_to_const_comparator::val_int(), Item_func_group_concat::val_int(), Item_func_numhybrid::val_int(), Item_copy_string::val_int(), Item_hex_string::val_int(), Item_param::val_int(), Item_string::val_int(), Item_proc_string::val_real(), Item_func_group_concat::val_real(), Item_sum_hybrid::val_real(), Item_func_numhybrid::val_real(), Item_copy_string::val_real(), Item_param::val_real(), Item_string::val_real(), Item_proc_string::val_str(), Item_char_typecast::val_str(), Item_func_sysdate_local::val_str(), Item_func_now::val_str(), Item_func_curtime::val_str(), Item_func_user::val_str(), Item_func_conv_charset::val_str(), Item_func_aes_decrypt::val_str(), Item_func_aes_encrypt::val_str(), Item_func_numhybrid::val_str(), Item_hex_string::val_str(), Item_string::val_str(), Item_copy_string::val_str(), Item_field::val_str(), and Item_sp_variable::val_str().

my_bool Item::unsigned_flag

Definition at line 489 of file item.h.

my_bool Item::with_subselect

Definition at line 495 of file item.h.

Referenced by Item_func::fix_fields(), Item_cond::fix_fields(), Item(), and Item_subselect::Item_subselect().

The documentation for this class was generated from the following files:

mysql/src/5.1-dbg/sql/item.h
mysql/src/5.1-dbg/sql/item.cc

Generated on Sat Sep 9 21:19:14 2006 for MySQL 5.1 by

1.4.7

The world's most popular open source database

Item Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Private Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation