MySQL ROW_COUNT() 可以用来获取 MySQL 查询影响的总行数。为了说明这一点，我们正在创建一个过程，通过该过程我们可以向表中插入记录，并且它将显示有多少行受到影响。
示例
mysql> Delimiter //
mysql> CREATE PROCEDURE `query`.`row_cnt` (IN command VarChar(60000))
-> BEGIN
-> SET @query = command;
-> PREPARE stmt FROM @query;
-> EXECUTE stmt;
-> SELECT ROW_COUNT() AS 'Affected rows';
-> END //
Query OK, 0 rows affected (0.00 sec)
mysql> Delimiter ;
mysql> Create table Testing123(First Varchar(20), Second Varchar(20));
Query OK, 0 rows affected (0.48 sec)
mysql> CALL row_cnt("INSERT INTO testing123(First,Second) Values('Testing First','Testing Second');");
+---------------+
| Affected rows |
+---------------+
| 1 |
+---------------+
1 row in set (0.10 sec)
Query OK, 0 rows affected (0.11 sec)上述结果集显示，在将数据插入到 ‘testing123’ 表后，受影响的行数为 1。
