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MySQL 8.4.2
Source Code Documentation
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MySQL 8.4.2
Source Code Documentation
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Implementation of name resolution stage. More...
#include "sql/sql_resolver.h"#include <sys/types.h>#include <algorithm>#include <cassert>#include <cstddef>#include <cstdio>#include <cstring>#include <deque>#include <functional>#include <initializer_list>#include <utility>#include <vector>#include "field_types.h"#include "lex_string.h"#include "map_helpers.h"#include "mem_root_deque.h"#include "my_alloc.h"#include "my_bitmap.h"#include "my_compiler.h"#include "my_dbug.h"#include "my_inttypes.h"#include "my_sqlcommand.h"#include "my_sys.h"#include "my_table_map.h"#include "mysql/components/services/bits/psi_bits.h"#include "mysql_com.h"#include "mysqld_error.h"#include "prealloced_array.h"#include "sql/aggregate_check.h"#include "sql/auth/auth_acls.h"#include "sql/auth/auth_common.h"#include "sql/check_stack.h"#include "sql/current_thd.h"#include "sql/derror.h"#include "sql/enum_query_type.h"#include "sql/error_handler.h"#include "sql/field.h"#include "sql/item.h"#include "sql/item_cmpfunc.h"#include "sql/item_func.h"#include "sql/item_row.h"#include "sql/item_subselect.h"#include "sql/item_sum.h"#include "sql/join_optimizer/bit_utils.h"#include "sql/join_optimizer/join_optimizer.h"#include "sql/mdl.h"#include "sql/mem_root_array.h"#include "sql/nested_join.h"#include "sql/opt_hints.h"#include "sql/opt_trace.h"#include "sql/opt_trace_context.h"#include "sql/parse_tree_nodes.h"#include "sql/parser_yystype.h"#include "sql/query_options.h"#include "sql/query_result.h"#include "sql/range_optimizer/partition_pruning.h"#include "sql/range_optimizer/range_optimizer.h"#include "sql/sql_base.h"#include "sql/sql_class.h"#include "sql/sql_cmd.h"#include "sql/sql_const.h"#include "sql/sql_derived.h"#include "sql/sql_error.h"#include "sql/sql_executor.h"#include "sql/sql_lex.h"#include "sql/sql_list.h"#include "sql/sql_optimizer.h"#include "sql/sql_select.h"#include "sql/sql_test.h"#include "sql/sql_union.h"#include "sql/system_variables.h"#include "sql/table.h"#include "sql/thd_raii.h"#include "sql/thr_malloc.h"#include "sql/visible_fields.h"#include "sql/window.h"#include "template_utils.h"#include "thr_lock.h"Classes | |
| class | Semijoin_decorrelation |
| Context object used by semijoin equality decorrelation code. More... | |
| struct | Lifted_expressions_map |
Helper singleton class used to track information needed to perform the transform of a correlated scalar subquery in a derived table, as performed by decorrelate_derived_scalar_subquery_pre and decorrelate_derived_scalar_subquery_pre. More... | |
Functions | |
| static bool | simplify_const_condition (THD *thd, Item **cond, bool remove_cond, bool *ret_cond_value) |
| Try to replace a const condition with a simple constant. More... | |
| static Item * | create_rollup_switcher (THD *thd, Query_block *query_block, Item_sum *item, int send_group_parts) |
| static bool | fulltext_uses_rollup_column (const Query_block *query_block) |
| Checks if there are any calls to the MATCH function that take a ROLLUP column as argument in the SELECT list, GROUP BY clause, HAVING clause or ORDER BY clause. More... | |
| static void | update_used_tables_for_join (mem_root_deque< Table_ref * > *tables) |
| Update used tables information for a JOIN expression. More... | |
| static Table_ref ** | make_leaf_tables (Table_ref **list, Table_ref *tables) |
| Make list of leaf tables of join table tree. More... | |
| static void | fix_tables_after_pullout (Query_block *parent_query_block, Query_block *removed_query_block, Table_ref *tr, uint table_adjust, table_map lateral_deps) |
| Update table reference information for conditions and expressions due to query blocks having been merged in from derived tables/views and due to semi-join transformation. More... | |
| static bool | decorrelate_equality (Semijoin_decorrelation &sj_decor, Item_func *func, bool *was_correlated) |
| Try to decorrelate an (in)equality node. More... | |
| static bool | can_decorrelate_operator (Item_func *func, bool only_eq) |
| bool | walk_join_list (mem_root_deque< Table_ref * > &list, std::function< bool(Table_ref *)> action) |
| static bool | build_sj_exprs (THD *thd, mem_root_deque< Item * > *sj_outer_exprs, mem_root_deque< Item * > *sj_inner_exprs, Item_exists_subselect *subq_pred, Query_block *subq_query_block) |
| Builds the list of SJ outer/inner expressions. More... | |
| static bool | replace_subcondition (THD *thd, Item **tree, Item *old_cond, Item *new_cond, bool do_fix_fields, bool *found_ptr=nullptr) |
| Destructively replaces a sub-condition inside a condition tree. More... | |
| void | propagate_nullability (mem_root_deque< Table_ref * > *tables, bool nullable) |
| Propagate nullability into inner tables of outer join operation. More... | |
| bool | find_order_in_list (THD *thd, Ref_item_array ref_item_array, Table_ref *tables, ORDER *order, mem_root_deque< Item * > *fields, bool is_group_field, bool is_window_order) |
| Resolve an ORDER BY or GROUP BY column reference. More... | |
| bool | setup_order (THD *thd, Ref_item_array ref_item_array, Table_ref *tables, mem_root_deque< Item * > *fields, ORDER *order) |
| Resolve and setup list of expressions in ORDER BY clause. More... | |
| static ReplaceResult | wrap_grouped_expressions_for_rollup (Query_block *select, Item *item, Item *parent, unsigned argument_idx) |
| Checks whether an item matches a grouped expression, creates an Item_rollup_group_item around it and replaces the reference to it with that item. More... | |
| static bool | WalkAndReplaceInner (THD *thd, Item *parent, unsigned argument_idx, const function< ReplaceResult(Item *item, Item *parent, unsigned argument_idx)> &get_new_item, Item **child_ref) |
| Helper function for WalkAndReplace() which replaces the Item referenced by "child_ref" if "get_new_item" returns a replacement, or visits the children of "child_ref" otherwise. More... | |
| bool | WalkAndReplace (THD *thd, Item *item, const function< ReplaceResult(Item *item, Item *parent, unsigned argument_idx)> &get_new_item) |
| static bool | refresh_comparators_after_rollup (Item *item) |
| Refreshes the comparators after ROLLUP resolving. More... | |
| bool | validate_gc_assignment (const mem_root_deque< Item * > &fields, const mem_root_deque< Item * > &values, TABLE *table) |
| validate_gc_assignment Check whether the other values except DEFAULT are assigned for generated columns. More... | |
| static bool | baptize_item (THD *thd, Item *item, int *field_no) |
| Helper function to make names for columns of a derived table replacing a scalar or table subquery. More... | |
| static bool | update_context_to_derived (Item *expr, Query_block *new_derived) |
| A minion of transform_grouped_to_derived. More... | |
| static bool | replace_aggregate_in_list (Item::Aggregate_replacement &info, bool was_hidden, mem_root_deque< Item * > *list, Ref_item_array *ref_item_array) |
| A minion of transform_grouped_to_derived. More... | |
| static bool | collect_aggregates (Query_block *select, Item_sum::Collect_grouped_aggregate_info *aggregates) |
| A minion of transform_grouped_to_derived. More... | |
| static bool | query_block_contains_subquery (Query_block *select, Query_expression *slu) |
| A minion of transform_scalar_subqueries_to_join_with_derived. More... | |
| static bool | walk_join_conditions (mem_root_deque< Table_ref * > &list, std::function< bool(Item **expr_p)> action, Item::Collect_scalar_subquery_info *info) |
| static void | remember_transform (THD *thd, Query_block *select) |
| Remember if this transform was performed. More... | |
| static bool | add_partition_by_expr (THD *thd, PT_order_list *partition, Query_block *qb, Item *expr) |
| Given an expression, create an ORDER expression for that expression and add it to a window's ORDER BY list in preparation for synthesizing a window function, cf. More... | |
| static bool | replace_inner_function_calls_in_lifted_predicate (THD *thd, Table_ref *derived, Lifted_expressions_map *lifted_exprs, Query_block *qb) |
| Function calls in lifted join condition. More... | |
| static bool | replace_inner_fields_in_lifted_predicate (THD *thd, Table_ref *derived, Lifted_expressions_map *lifted_exprs, Query_block *qb, uint *field_pos_idx) |
| Fields in lifted join condition. More... | |
| static bool | build_reject_if (THD *thd, Table_ref *derived, Lifted_expressions_map *lifted_exprs, uint field_pos_idx) |
| static std::pair< bool, bool > | item_containing_non_correlated_field (Item *item) |
| WL#15540 check that predicate operand item conforms to our requirements. More... | |
| bool | is_correlated_predicate_eligible (Item *cor_pred) |
| Called to check if the provided correlated predicate is eligible for transformation. More... | |
| static bool | extract_correlated_condition (THD *thd, Item **cond, Item **correlated_cond) |
| Extracts the top level correlated condition in an OR condition. More... | |
Variables | |
| static const enum_walk | walk_options |
Implementation of name resolution stage.
1.9.2