mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-05-10 00:54:30 +02:00
Code Issues Projects Releases Packages Wiki Activity

after review patch

Browse source 
mysql-test/r/negation_elimination.result:
  new tests of negation elimination
mysql-test/t/negation_elimination.test:
  new tests of negation elimination
sql/item.h:
  test of boolean functions added
sql/item_cmpfunc.cc:
  NOT subtree is already checked, so wee need to return just argument
sql/item_cmpfunc.h:
  test of boolean functions added
sql/mysql_priv.h:
  'place' to detect WHERE clause
sql/sql_parse.cc:
  function for creation negated expression
sql/sql_select.cc:
  removed unused function
sql/sql_select.h:
  removed unused function
sql/sql_yacc.yy:
  'place' to detect WHERE clause
This commit is contained in:
unknown 2004-08-31 21:10:57 +03:00
commit 1dc52f0763
10 changed files with 74 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

5
sql/item_cmpfunc.cc
View file

@ -2707,9 +2707,6 @@ longlong Item_cond_xor::val_int()
IS NULL(a) -> IS NOT NULL(a)
IS NOT NULL(a) -> IS NULL(a)
NOTE
This method is used in the eliminate_not_funcs() function.
RETURN
New item or
NULL if we cannot apply NOT transformation (see Item::neg_transformer()).
@ -2718,7 +2715,7 @@ longlong Item_cond_xor::val_int()
Item *Item_func_not::neg_transformer(THD *thd) /* NOT(x) -> x */
{
// We should apply negation elimination to the argument of the NOT function
return eliminate_not_funcs(thd, args[0]);
return args[0];
}