Hi Experts, When issuing updates in mysql (in the console window), mysql will tell you if any rows matched and how many rows were updated (see below). I know how to get number of rows udpated using mysql_affected_rows(), but is there any way to get the number of rows matched? I want to find out, when rows updated = 0, if there were no updates because the row wasn't found (rows matched will = 0) or because the update would not have changed any data (rows matched = 1).
mysql> select * from test; +------+------+ | roll | s | +------+------+ | 1 | new | +------+------+ 1 row in set (0.00 sec) mysql> update test set roll = 1, s = 'new' where roll = 1; Query OK, 0 rows affected (0.00 sec) Rows matched: 1 Changed: 0 Warnings: 0 mysql> update test set roll = 1, s = 'new' where roll = 17; Query OK, 0 rows affected (0.00 sec) Rows matched: 0 Changed: 0 Warnings: 0 mysql> update test set roll = 1, s = 'neww' where roll = 1; Query OK, 1 row affected (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 0 -- Cheers, Rajan
