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MWL#89

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Merge with 5.3
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unknown
2011-05-02 21:59:16 +03:00
parent 8ac88c88f0 0f4236659c
commit 5dc11616b2
74 changed files with 9245 additions and 1677 deletions
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11
sql/sql_lex.h
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@ -442,10 +442,12 @@ public:
virtual void init_query();
virtual void init_select();
void include_down(st_select_lex_node *upper);
void add_slave(st_select_lex_node *slave_arg);
void include_neighbour(st_select_lex_node *before);
void include_standalone(st_select_lex_node *sel, st_select_lex_node **ref);
void include_global(st_select_lex_node **plink);
void exclude();
void exclude_from_tree();
virtual st_select_lex_unit* master_unit()= 0;
virtual st_select_lex* outer_select()= 0;
@ -846,6 +848,15 @@ public:
void clear_index_hints(void) { index_hints= NULL; }
bool is_part_of_union() { return master_unit()->is_union(); }
/*
Optimize all subqueries that have not been flattened into semi-joins.
This functionality is a method of SELECT_LEX instead of JOIN because
some SQL statements as DELETE do not have a corresponding JOIN object.
*/
bool optimize_unflattened_subqueries();
/* Set the EXPLAIN type for this subquery. */
void set_explain_type();
private:
/* current index hint kind. used in filling up index_hints */
enum index_hint_type current_index_hint_type;