23#ifndef QUERY_RESULT_INCLUDED
24#define QUERY_RESULT_INCLUDED
39#include "mysqld_error.h"
50template <
class Element_type>
199 uint
flags)
override;
230#define ESCAPE_CHARS "ntrb0ZN"
235#define NUMERIC_CHARS ".0123456789e+-"
Kerberos Client Authentication nullptr
Definition: auth_kerberos_client_plugin.cc:250
Base class that is common to all subqueries and subquery predicates.
Definition: item_subselect.h:79
Base class that is used to represent any kind of expression in a relational query.
Definition: item.h:932
Definition: sql_list.h:433
Definition: parse_tree_nodes.h:1297
Definition: query_result.h:279
List< PT_select_var > var_list
Definition: query_result.h:283
bool prepare(THD *thd, const mem_root_deque< Item * > &list, Query_expression *u) override
Perform preparation specific to the query expression or DML statement.
Definition: query_result.cc:692
void cleanup() override
Cleanup after this execution.
Definition: query_result.h:292
bool send_eof(THD *thd) override
Definition: query_result.cc:740
ha_rows row_count
Definition: query_result.h:280
Query_dumpvar()
Definition: query_result.h:284
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:709
bool check_supports_cursor() const override
Check if this query result set supports cursors.
Definition: query_result.cc:704
This class represents a query expression (one query block or several query blocks combined with UNION...
Definition: sql_lex.h:624
Definition: query_result.h:270
Query_result_dump(sql_exchange *ex)
Definition: query_result.h:272
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:661
bool prepare(THD *thd, const mem_root_deque< Item * > &list, Query_expression *u) override
Perform preparation specific to the query expression or DML statement.
Definition: query_result.cc:650
bool start_execution(THD *thd) override
Prepare for execution of the query expression or DML statement.
Definition: query_result.cc:656
Definition: query_result.h:237
bool start_execution(THD *thd) override
Prepare for execution of the query expression or DML statement.
Definition: query_result.cc:340
const CHARSET_INFO * write_cs
Definition: query_result.h:260
bool is_unsafe_field_sep
Definition: query_result.h:258
bool prepare(THD *thd, const mem_root_deque< Item * > &list, Query_expression *u) override
Perform preparation specific to the query expression or DML statement.
Definition: query_result.cc:254
void cleanup() override
Cleanup after this execution.
Definition: query_result.cc:641
int field_sep_char
Definition: query_result.h:239
bool fixed_row_size
Definition: query_result.h:259
int escape_char
Definition: query_result.h:239
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:351
size_t field_term_length
Definition: query_result.h:238
int line_sep_char
Definition: query_result.h:239
Query_result_export(sql_exchange *ex)
Definition: query_result.h:262
bool is_ambiguous_field_sep
Definition: query_result.h:246
bool is_ambiguous_field_term
Definition: query_result.h:252
int field_term_char
Definition: query_result.h:240
Definition: query_result.h:177
Query_result_interceptor()
Definition: query_result.h:179
bool is_interceptor() const final
Checks if this Query_result intercepts and transforms the result set.
Definition: query_result.h:185
bool send_result_set_metadata(THD *, const mem_root_deque< Item * > &, uint) override
Definition: query_result.h:181
uint field_count(const mem_root_deque< Item * > &) const override
Definition: query_result.h:180
Definition: query_result.h:188
void cleanup() override
Cleanup after this execution.
Definition: query_result.h:204
bool is_result_set_started
True if we have sent result set metadata to the client.
Definition: query_result.h:194
Query_result_send()
Definition: query_result.h:197
bool check_supports_cursor() const override
Check if this query result set supports cursors.
Definition: query_result.h:202
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:96
void abort_result_set(THD *thd) override
Definition: query_result.cc:77
bool send_result_set_metadata(THD *thd, const mem_root_deque< Item * > &list, uint flags) override
Definition: query_result.cc:69
bool send_eof(THD *thd) override
Definition: query_result.cc:111
Base class for result from a subquery.
Definition: query_result.h:299
bool send_eof(THD *) override
Definition: query_result.h:307
Query_result_subquery(Item_subselect *item_arg)
Definition: query_result.h:304
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override=0
Item_subselect * item
Definition: query_result.h:301
Definition: query_result.h:209
bool needs_file_privilege() const override
Definition: query_result.h:224
IO_CACHE cache
Definition: query_result.h:213
bool check_supports_cursor() const override
Check if this query result set supports cursors.
Definition: query_result.cc:149
sql_exchange * exchange
Definition: query_result.h:211
char path[FN_REFLEN]
Definition: query_result.h:215
Query_result_to_file(sql_exchange *ex)
Definition: query_result.h:218
File file
Definition: query_result.h:212
void cleanup() override
Cleanup after this execution.
Definition: query_result.cc:165
~Query_result_to_file() override
Definition: query_result.h:222
ha_rows row_count
Definition: query_result.h:214
bool send_eof(THD *thd) override
Definition: query_result.cc:154
Definition: query_result.h:57
virtual Server_side_cursor * cursor() const
Definition: query_result.h:165
Query_result()
Definition: query_result.h:73
virtual bool send_eof(THD *thd)=0
virtual bool send_result_set_metadata(THD *thd, const mem_root_deque< Item * > &list, uint flags)=0
virtual bool send_data(THD *thd, const mem_root_deque< Item * > &items)=0
virtual bool is_interceptor() const
Checks if this Query_result intercepts and transforms the result set.
Definition: query_result.h:159
virtual bool change_query_result(THD *, Query_result *)
Change wrapped Query_result.
Definition: query_result.h:89
virtual bool need_explain_interceptor() const
Definition: query_result.h:91
virtual bool prepare(THD *, const mem_root_deque< Item * > &, Query_expression *u)
Perform preparation specific to the query expression or DML statement.
Definition: query_result.h:98
double estimated_cost
Cost to execute the subquery which produces this result.
Definition: query_result.h:71
ha_rows estimated_rowcount
Number of records estimated in this result.
Definition: query_result.h:66
virtual void cleanup()
Cleanup after this execution.
Definition: query_result.h:151
virtual bool reset()
Cleanup after one execution of the unit, to be ready for a next execution inside the same statement.
Definition: query_result.h:143
virtual bool check_supports_cursor() const
Check if this query result set supports cursors.
Definition: query_result.h:133
virtual uint field_count(const mem_root_deque< Item * > &fields) const
Definition: query_result.cc:65
virtual void abort_result_set(THD *)
Definition: query_result.h:137
virtual bool create_table_for_query_block(THD *)
Create table, only needed to support CREATE TABLE ... SELECT.
Definition: query_result.h:116
Query_expression * unit
Definition: query_result.h:59
virtual ~Query_result()=default
virtual bool needs_file_privilege() const
Definition: query_result.h:76
virtual void set_limit(ha_rows)
Only overridden (and non-empty) for Query_result_union, q.v.
Definition: query_result.h:162
virtual bool start_execution(THD *)
Prepare for execution of the query expression or DML statement.
Definition: query_result.h:113
Common base class for n-ary set operations, including unary.
Definition: query_term.h:396
Server_side_cursor – an interface for materialized implementation of cursors.
Definition: sql_cursor.h:50
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_lexer_thd.h:35
A (partial) implementation of std::deque allocating its blocks on a MEM_ROOT.
Definition: mem_root_deque.h:109
Used to hold information about file and file structure in exchange via non-DB file (....
Definition: sql_exchange.h:78
#define L
Definition: ctype-tis620.cc:74
void my_error(int nr, myf MyFlags,...)
Fill in and print a previously registered error message.
Definition: my_error.cc:215
static int flags[50]
Definition: hp_test1.cc:39
A better implementation of the UNIX ctype(3) library.
This file includes constants used by all storage engines.
my_off_t ha_rows
Definition: my_base.h:1139
Some integer typedefs for easier portability.
#define MYF(v)
Definition: my_inttypes.h:96
Common #defines and includes for file and socket I/O.
#define FN_REFLEN
Definition: my_io.h:82
Types to make file and socket I/O compatible.
int File
Definition: my_io_bits.h:50
Common header for many mysys elements.
std::list< T, ut::allocator< T > > list
Specialization of list which uses ut_allocator.
Definition: ut0new.h:2877
Definition: m_ctype.h:422