MySQL 8.0.39
Source Code Documentation
my_table_map.h
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1/*
2 Copyright (c) 2016, 2024, Oracle and/or its affiliates.
3
4 This program is free software; you can redistribute it and/or modify
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6 as published by the Free Software Foundation.
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16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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23 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
24
25#ifndef MY_TABLE_MAP_INCLUDED
26#define MY_TABLE_MAP_INCLUDED
27
28#include <stdint.h>
29
30using table_map = uint64_t; // Used for table bits in join.
31using nesting_map = uint64_t; // Used for flags of nesting constructs.
32using qep_tab_map = uint64_t; // Used for indexing QEP_TABs in a JOIN.
33
34// Test whether "map" contains the given table.
35static inline bool ContainsTable(uint64_t map, unsigned idx) {
36 return map & (uint64_t{1} << idx);
37}
38
39#endif // MY_TABLE_MAP_INCLUDED
uint64_t nesting_map
Definition: my_table_map.h:31
uint64_t table_map
Definition: my_table_map.h:30
uint64_t qep_tab_map
Definition: my_table_map.h:32
static bool ContainsTable(uint64_t map, unsigned idx)
Definition: my_table_map.h:35
std::map< Key, Value, Compare, ut::allocator< std::pair< const Key, Value > > > map
Specialization of map which uses ut_allocator.
Definition: ut0new.h:2892