23#ifndef QUERY_RESULT_INCLUDED
24#define QUERY_RESULT_INCLUDED
35#include "mysqld_error.h"
46template <
class Element_type>
226#define ESCAPE_CHARS "ntrb0ZN"
231#define NUMERIC_CHARS ".0123456789e+-"
Definition: item_subselect.h:79
Base class that is used to represent any kind of expression in a relational query.
Definition: item.h:850
Definition: sql_list.h:433
Definition: parse_tree_nodes.h:1190
Definition: query_result.h:275
List< PT_select_var > var_list
Definition: query_result.h:279
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:690
void cleanup() override
Cleanup after this execution.
Definition: query_result.h:288
bool send_eof(THD *thd) override
Definition: query_result.cc:738
ha_rows row_count
Definition: query_result.h:276
Query_dumpvar()
Definition: query_result.h:280
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:707
bool check_supports_cursor() const override
Check if this query result set supports cursors.
Definition: query_result.cc:702
This class represents a query expression (one query block or several query blocks combined with UNION...
Definition: sql_lex.h:622
Definition: query_result.h:266
Query_result_dump(sql_exchange *ex)
Definition: query_result.h:268
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:659
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:648
bool start_execution(THD *thd) override
Prepare for execution of the query expression or DML statement.
Definition: query_result.cc:654
Definition: query_result.h:233
bool start_execution(THD *thd) override
Prepare for execution of the query expression or DML statement.
Definition: query_result.cc:338
const CHARSET_INFO * write_cs
Definition: query_result.h:256
bool is_unsafe_field_sep
Definition: query_result.h:254
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:252
void cleanup() override
Cleanup after this execution.
Definition: query_result.cc:639
int field_sep_char
Definition: query_result.h:235
bool fixed_row_size
Definition: query_result.h:255
int escape_char
Definition: query_result.h:235
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:349
size_t field_term_length
Definition: query_result.h:234
int line_sep_char
Definition: query_result.h:235
Query_result_export(sql_exchange *ex)
Definition: query_result.h:258
bool is_ambiguous_field_sep
Definition: query_result.h:242
bool is_ambiguous_field_term
Definition: query_result.h:248
int field_term_char
Definition: query_result.h:236
Definition: query_result.h:173
Query_result_interceptor()
Definition: query_result.h:175
bool is_interceptor() const final
Checks if this Query_result intercepts and transforms the result set.
Definition: query_result.h:181
bool send_result_set_metadata(THD *, const mem_root_deque< Item * > &, uint) override
Definition: query_result.h:177
uint field_count(const mem_root_deque< Item * > &) const override
Definition: query_result.h:176
Definition: query_result.h:184
void cleanup() override
Cleanup after this execution.
Definition: query_result.h:200
bool is_result_set_started
True if we have sent result set metadata to the client.
Definition: query_result.h:190
Query_result_send()
Definition: query_result.h:193
bool check_supports_cursor() const override
Check if this query result set supports cursors.
Definition: query_result.h:198
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override
Definition: query_result.cc:94
void abort_result_set(THD *thd) override
Definition: query_result.cc:75
bool send_result_set_metadata(THD *thd, const mem_root_deque< Item * > &list, uint flags) override
Definition: query_result.cc:67
bool send_eof(THD *thd) override
Definition: query_result.cc:109
Base class for result from a subquery.
Definition: query_result.h:295
bool send_eof(THD *) override
Definition: query_result.h:303
Query_result_subquery(Item_subselect *item_arg)
Definition: query_result.h:300
bool send_data(THD *thd, const mem_root_deque< Item * > &items) override=0
Item_subselect * item
Definition: query_result.h:297
Definition: query_result.h:205
bool needs_file_privilege() const override
Definition: query_result.h:220
IO_CACHE cache
Definition: query_result.h:209
bool check_supports_cursor() const override
Check if this query result set supports cursors.
Definition: query_result.cc:147
sql_exchange * exchange
Definition: query_result.h:207
char path[FN_REFLEN]
Definition: query_result.h:211
Query_result_to_file(sql_exchange *ex)
Definition: query_result.h:214
File file
Definition: query_result.h:208
void cleanup() override
Cleanup after this execution.
Definition: query_result.cc:163
~Query_result_to_file() override
Definition: query_result.h:218
ha_rows row_count
Definition: query_result.h:210
bool send_eof(THD *thd) override
Definition: query_result.cc:152
Definition: query_result.h:53
virtual Server_side_cursor * cursor() const
Definition: query_result.h:161
Query_result()
Definition: query_result.h:69
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:155
virtual bool change_query_result(THD *, Query_result *)
Change wrapped Query_result.
Definition: query_result.h:85
virtual bool need_explain_interceptor() const
Definition: query_result.h:87
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:94
double estimated_cost
Cost to execute the subquery which produces this result.
Definition: query_result.h:67
ha_rows estimated_rowcount
Number of records estimated in this result.
Definition: query_result.h:62
virtual void cleanup()
Cleanup after this execution.
Definition: query_result.h:147
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:139
virtual bool check_supports_cursor() const
Check if this query result set supports cursors.
Definition: query_result.h:129
virtual uint field_count(const mem_root_deque< Item * > &fields) const
Definition: query_result.cc:63
virtual void abort_result_set(THD *)
Definition: query_result.h:133
virtual bool create_table_for_query_block(THD *)
Create table, only needed to support CREATE TABLE ... SELECT.
Definition: query_result.h:112
Query_expression * unit
Definition: query_result.h:55
virtual ~Query_result()=default
virtual bool needs_file_privilege() const
Definition: query_result.h:72
virtual void set_limit(ha_rows)
Only overridden (and non-empty) for Query_result_union, q.v.
Definition: query_result.h:158
virtual bool start_execution(THD *)
Prepare for execution of the query expression or DML statement.
Definition: query_result.h:109
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:33
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:75
Fido Client Authentication nullptr
Definition: fido_client_plugin.cc:221
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
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:2876
Definition: m_ctype.h:382
unsigned int uint
Definition: uca9-dump.cc:74