美好的一天！
我试图用相同的参数运行相同的更新语句两次,似乎它没有在第二种情况下执行：
$update_query = $this->db->connection->prepare('UPDATE `Table SET `field` = :price WHERE (`partnum` = :partnum)');
$update_query->execute(array('price' => 123, 'partnum' => test));
var_dump($update_query->rowCount()); //returns 1
// If I insert here any statement it works as expected
$update_query->execute(array('price' => 123, 'partnum' => test));
var_dump($update_query->rowCount()); //returns 0!
我没有启用mySQL查询缓存.
谢谢！
解决方法:
如果UPDATE连续更改数据,则MysqL不会将此行计为受影响：
MysqL> SELECT val FROM t_source2 WHERE id = 1;
+-----+
| val |
+-----+
| 10 |
+-----+
1 row in set (0.00 sec)
MysqL> UPDATE t_source2 SET val = 1 WHERE id = 1;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
MysqL> UPDATE t_source2 SET val = 1 WHERE id = 1;
Query OK, 0 rows affected (0.00 sec)
Rows matched: 1 Changed: 0 Warnings: 0
