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independent ALL/ANY subselect on top of WHERE clause (subselect without GROUP BY or aggregate functions) optimisation

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(SCRUM) (WL#1086)


mysql-test/r/subselect.result:
  new optimisation tests
mysql-test/t/subselect.test:
  new optimisation tests
sql/item_cmpfunc.cc:
  new NOT
sql/item_cmpfunc.h:
  new NOT
sql/item_subselect.cc:
  independent ALL/ANY in top of WHERE clause optimisation
sql/item_subselect.h:
  independent ALL/ANY in top of WHERE clause optimisation
sql/item_sum.cc:
  prevent fixlields call for parameters of min/max if it is already done
sql/sql_union.cc:
  removed debuging print
sql/sql_yacc.yy:
  support of ALL optimisation
This commit is contained in:
unknown
2003-07-24 15:26:21 +03:00
parent d35bf560be
commit 9a3979e234
9 changed files with 130 additions and 21 deletions
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10
sql/item_cmpfunc.h
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@ -155,6 +155,16 @@ public:
const char *func_name() const { return "not"; }
};
class Item_func_not_all :public Item_func_not
{
bool abort_on_null;
public:
Item_func_not_all(Item *a) :Item_func_not(a), abort_on_null(0) {}
virtual void top_level_item() { abort_on_null= 1; }
bool top_level() { return abort_on_null; }
longlong val_int();
};
class Item_func_eq :public Item_bool_rowready_func2
{
public: