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sql_select.cc:

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Fixed a problem a with special cases of IS NULL usage
  caused by some erroneous change made when Item_equal
  was introduced.
This commit is contained in:
igor@rurik.mysql.com
2003-12-02 14:33:42 -08:00
parent e235d796c9
commit 0ba4b082fe
1 changed files with 6 additions and 2 deletions
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8
sql/sql_select.cc
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@ -5152,8 +5152,7 @@ remove_eq_conds(COND *cond,Item::cond_result *cond_value)
}
}
else if (cond->type() == Item::FUNC_ITEM &&
((Item_func*) cond)->functype() == Item_func::ISNULL_FUNC &&
!cond->const_item())
((Item_func*) cond)->functype() == Item_func::ISNULL_FUNC)
{
/*
Handles this special case for some ODBC applications:
@ -5203,6 +5202,11 @@ remove_eq_conds(COND *cond,Item::cond_result *cond_value)
}
}
}
if (cond->const_item())
{
*cond_value= eval_const_cond(cond) ? Item::COND_TRUE : Item::COND_FALSE;
return (COND*) 0;
}
}
else if (cond->type() == Item::FUNC_ITEM &&
((Item_func*) cond)->functype() == Item_func::MULT_EQUAL_FUNC)