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BUG#849776: Wrong result with semijoin + "Impossible where"

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- Provide fix_after_pullout() function for Item_in_optimizer and other Item_XXX classes (basically, all of them
  that have eval_not_null_tables, which means they have special rules for calculating not_null_tables_cache value)
This commit is contained in:
Sergey Petrunya 2011-09-23 01:25:08 +04:00
commit ebbdb14a02
7 changed files with 98 additions and 2 deletions
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4
sql/item_cmpfunc.h
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@ -262,6 +262,7 @@ public:
virtual void get_cache_parameters(List<Item> &parameters);
bool is_top_level_item();
bool eval_not_null_tables(uchar *opt_arg);
void fix_after_pullout(st_select_lex *new_parent, Item **ref);
};
class Comp_creator
@ -674,6 +675,7 @@ public:
CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
uint decimal_precision() const { return 1; }
bool eval_not_null_tables(uchar *opt_arg);
void fix_after_pullout(st_select_lex *new_parent, Item **ref);
};
@ -775,6 +777,7 @@ public:
uint decimal_precision() const;
const char *func_name() const { return "if"; }
bool eval_not_null_tables(uchar *opt_arg);
void fix_after_pullout(st_select_lex *new_parent, Item **ref);
};
@ -1313,6 +1316,7 @@ public:
bool is_bool_func() { return 1; }
CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
bool eval_not_null_tables(uchar *opt_arg);
void fix_after_pullout(st_select_lex *new_parent, Item **ref);
};
class cmp_item_row :public cmp_item