创建一个 MySQL 存储过程来计算受 MySQL 查询影响的行数?
mysqlmysqli database
以下是一个计算受 MySQL 查询影响的行数的过程 −
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)
