MySQL 8.4.3
Source Code Documentation
sql_tmp_table.h
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1#ifndef SQL_TMP_TABLE_INCLUDED
2#define SQL_TMP_TABLE_INCLUDED
3
4/* Copyright (c) 2000, 2024, Oracle and/or its affiliates.
5
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15 separately licensed software that they have either included with
16 the program or referenced in the documentation.
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20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
26
27/**
28 @file
29
30 @brief
31 Temporary table handling functions.
32*/
33
34#include <sys/types.h>
35
36#include "my_base.h" // ha_rows
37#include "my_inttypes.h"
38#include "sql/item.h" // Item
40
41class Create_field;
42class Field;
43class SJ_TMP_TABLE;
44class THD;
45struct ORDER;
46struct TABLE;
47template <class T>
48class List;
49
53};
54
56 const mem_root_deque<Item *> &fields, ORDER *group,
57 bool distinct, bool save_sum_fields,
58 ulonglong select_options, ha_rows rows_limit,
59 const char *table_alias);
62 bool is_virtual = true,
63 ulonglong select_options = 0,
64 const char *alias = nullptr);
66 bool insert_last_record, bool ignore_last_dup,
67 bool *is_duplicate);
70TABLE *create_duplicate_weedout_tmp_table(THD *thd, uint uniq_tuple_length_arg,
71 SJ_TMP_TABLE *sjtbl);
72bool setup_tmp_table_handler(THD *thd, TABLE *table, ulonglong select_options,
73 bool force_disk_table = false,
74 bool schema_table = false);
77 Func_ptr_array *copy_func, Field **from_field,
78 Field **default_field, bool group, bool modify_item,
79 bool table_cant_handle_bit_fields,
80 bool make_copy_field);
81Field *create_tmp_field_from_field(THD *thd, const Field *org_field,
82 const char *name, TABLE *table,
83 Item_field *item);
84
85/**
86 Get the minimum of max_key_length and max_key_part_length between
87 HEAP engine and internal_tmp_disk_storage_engine.
88*/
89void get_max_key_and_part_length(uint *max_key_length,
90 uint *max_key_part_length,
91 uint *max_key_parts);
93void encode_innodb_position(uchar *rowid_bytes, uint length, ha_rows row_num);
95#endif /* SQL_TMP_TABLE_INCLUDED */
Create_field is a description a field/column that may or may not exists in a table.
Definition: create_field.h:51
Definition: field.h:575
Definition: item.h:4344
Base class that is used to represent any kind of expression in a relational query.
Definition: item.h:936
Type
Definition: item.h:971
Definition: sql_list.h:467
A typesafe replacement for DYNAMIC_ARRAY.
Definition: mem_root_array.h:426
Definition: sql_executor.h:95
For each client connection we create a separate thread with THD serving as a thread/connection descri...
Definition: sql_lexer_thd.h:36
Object containing parameters used when creating and using temporary tables.
Definition: temp_table_param.h:95
A (partial) implementation of std::deque allocating its blocks on a MEM_ROOT.
Definition: mem_root_deque.h:111
This file includes constants used by all storage engines.
my_off_t ha_rows
Definition: my_base.h:1141
Some integer typedefs for easier portability.
unsigned long long int ulonglong
Definition: my_inttypes.h:56
unsigned char uchar
Definition: my_inttypes.h:52
void error(const char *format,...)
static PFS_engine_table_share_proxy table
Definition: pfs.cc:61
bool length(const dd::Spatial_reference_system *srs, const Geometry *g1, double *length, bool *null) noexcept
Computes the length of linestrings and multilinestrings.
Definition: length.cc:76
bool is_duplicate(Country_record *record, int skip_index)
Check for duplicate value of Primary/Unique Key column(s).
Definition: pfs_example_country.cc:51
required string type
Definition: replication_group_member_actions.proto:34
bool setup_tmp_table_handler(THD *thd, TABLE *table, ulonglong select_options, bool force_disk_table=false, bool schema_table=false)
Helper function to create_tmp_table_* family for setting up table's SE.
Definition: sql_tmp_table.cc:2112
Field * create_tmp_field(THD *thd, TABLE *table, Item *item, Item::Type type, Func_ptr_array *copy_func, Field **from_field, Field **default_field, bool group, bool modify_item, bool table_cant_handle_bit_fields, bool make_copy_field)
Create field for temporary table.
Definition: sql_tmp_table.cc:362
void free_tmp_table(TABLE *table)
Free temporary table.
Definition: sql_tmp_table.cc:2498
enum_internal_tmp_mem_storage_engine
Definition: sql_tmp_table.h:50
@ TMP_TABLE_TEMPTABLE
Definition: sql_tmp_table.h:52
@ TMP_TABLE_MEMORY
Definition: sql_tmp_table.h:51
Field * create_tmp_field_from_field(THD *thd, const Field *org_field, const char *name, TABLE *table, Item_field *item)
Lifecycle management of internal temporary tables.
Definition: sql_tmp_table.cc:190
TABLE * create_tmp_table(THD *thd, Temp_table_param *param, const mem_root_deque< Item * > &fields, ORDER *group, bool distinct, bool save_sum_fields, ulonglong select_options, ha_rows rows_limit, const char *table_alias)
Definition: sql_tmp_table.cc:885
void close_tmp_table(TABLE *table)
Close a temporary table at end of preparation or execution.
Definition: sql_tmp_table.cc:2449
TABLE * create_tmp_table_from_fields(THD *thd, List< Create_field > &field_list, bool is_virtual=true, ulonglong select_options=0, const char *alias=nullptr)
Create an, optionally reduced, TABLE object with properly set up Field list from a list of field defi...
Definition: sql_tmp_table.cc:1924
bool reposition_innodb_cursor(TABLE *table, ha_rows row_num)
Helper function for create_ondisk_from_heap().
Definition: sql_tmp_table.cc:2929
void encode_innodb_position(uchar *rowid_bytes, uint length, ha_rows row_num)
Encode an InnoDB PK in 6 bytes, high-byte first; like InnoDB's dict_sys_write_row_id() does.
Definition: sql_tmp_table.cc:2907
bool open_tmp_table(TABLE *table)
Definition: sql_tmp_table.cc:2237
void get_max_key_and_part_length(uint *max_key_length, uint *max_key_part_length, uint *max_key_parts)
Get the minimum of max_key_length and max_key_part_length between HEAP engine and internal_tmp_disk_s...
Definition: sql_tmp_table.cc:643
TABLE * create_duplicate_weedout_tmp_table(THD *thd, uint uniq_tuple_length_arg, SJ_TMP_TABLE *sjtbl)
Create a temporary table to weed out duplicate rowid combinations.
Definition: sql_tmp_table.cc:1704
bool create_ondisk_from_heap(THD *thd, TABLE *table, int error, bool insert_last_record, bool ignore_last_dup, bool *is_duplicate)
If a MEMORY table gets full, create a disk-based table and copy all rows to this.
Definition: sql_tmp_table.cc:2595
void init_cache_tmp_engine_properties()
Initialize the storage engine properties for the alternative temporary table storage engines.
Definition: sql_tmp_table.cc:625
bool instantiate_tmp_table(THD *thd, TABLE *table)
Instantiates temporary table.
Definition: sql_tmp_table.cc:2378
case opt name
Definition: sslopt-case.h:29
Definition: table.h:286
Definition: table.h:1406