diff options
Diffstat (limited to 'sql/opt_sum.cc')
| -rw-r--r-- | sql/opt_sum.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc index 10491d9b45b..794ec40fc66 100644 --- a/sql/opt_sum.cc +++ b/sql/opt_sum.cc @@ -438,7 +438,7 @@ int opt_sum_query(THD *thd, The optimization is not applicable in both cases: (a) 'expr' is a non-constant expression. Then we can't replace 'expr' by a constant. - (b) 'expr' is a costant. According to ANSI, MIN/MAX must return + (b) 'expr' is a constant. According to ANSI, MIN/MAX must return NULL if the query does not return any rows. Thus, if we are not able to determine if the query returns any rows, we can't apply the optimization and replace MIN/MAX with a constant. |