How do I count the number of deleted rows in a MYSQL query?

Question

I'm trying to find out whether a delete query executed properly. I know how many rows its supposed to delete, and I'd like to check that the number that were deleted, matches what's expected, from within the query itself.

How do I find out the number of rows that I just deleted, from within a SQL query running against MySQL? Separate statements are fine, as long as I can bundle them into one query.

Answer 1

请参阅此处的MySQL ROW_COUNT函数http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_row-count

Answer 2

this is the query what you want, SELECT ROW_COUNT()

mysql> DELETE FROM t WHERE i IN(1,2);
Query OK, 2 rows affected (0.00 sec)

mysql> SELECT ROW_COUNT() as DelRowCount;
+-------------+
| DelRowCount |
+-------------+
|           2 |
+-------------+
1 row in set (0.00 sec)