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| author | unknown <gluh@gluh.mysql.r18.ru> | 2004-09-18 13:06:44 +0400 |
|---|---|---|
| committer | unknown <gluh@gluh.mysql.r18.ru> | 2004-09-18 13:06:44 +0400 |
| commit | d7281b331a79d1e2e3f026bbf71660006ee6df0b (patch) | |
| tree | 93fd06c086dffc2635a6570d6c71cc5bb22174c9 /sql/item_cmpfunc.cc | |
| parent | e84eb55a0778ca62490c79136b9a09379b02773a (diff) | |
| download | mariadb-git-d7281b331a79d1e2e3f026bbf71660006ee6df0b.tar.gz | |
Fix for bug #5595: NULLIF() IS NULL returns false if NULLIF() returns NULL
Diffstat (limited to 'sql/item_cmpfunc.cc')
| -rw-r--r-- | sql/item_cmpfunc.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index 013304d9df5..fbc1ad97e76 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -654,6 +654,15 @@ Item_func_nullif::val_str(String *str) return res; } + +bool +Item_func_nullif::is_null() +{ + if (!(this->*cmp_func)()) + return null_value=1; + return 0; +} + /* CASE expression Return the matching ITEM or NULL if all compares (including else) failed |