unknown 06017a0db0 fixed bug 185 (constant IN (SELECT field ...) do not return NULL correctly) ...

mysql-test/r/subselect.result:
  new test results
  test of bug 185
mysql-test/t/subselect.test:
  test of bug 185
sql/item.h:
  new method
sql/item_cmpfunc.cc:
  new Item to control NULL value in HAVING clouse
sql/item_cmpfunc.h:
  new Item to control NULL value in HAVING clouse
sql/item_subselect.cc:
  if IN was rewrited through WHERE thien it will be rewrited in following way:
  
  WHERE left_expr=item or is null(item) heving is_not_null_test(item)
sql/item_subselect.h:
  Item_is_not_null_test can change was_null flag
sql/sql_select.cc:
  some layout fix

2003-04-23 00:01:19 +03:00

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