mysql 存儲過程：提供查詢語句並返回查詢執行影響的行數

mysql 存儲過程：提供查詢語句並返回查詢執行影響的行數
DELIMITER $$
DROP PROCEDURE IF EXISTS `p_get_select_row_number`$$
CREATE
    PROCEDURE `test_cases`.`p_get_select_row_number`(IN p_select_sql VARCHAR(500), OUT p_count INT(8) )
    BEGIN 
    -- 聲明
    DECLARE cnt INT DEFAULT 0;
    DECLARE stmt VARCHAR(200);
    
    -- 賦值
    SET @stmt = CONCAT(p_select_sql);  
    -- prepare   
    PREPARE s1 FROM @stmt;
    -- 執行 
    EXECUTE s1;
    -- 獲取查詢影響的行數
    SET @cnt = FOUND_ROWS(); 
    -- 輸出影響函數
    SELECT @cnt INTO p_count ;   

    END$$

DELIMITER ;

CALL p_get_select_row_number('select * from report', @qqq);
SELECT @qqq;

 

執行結果

8 rows in set (0.00 sec)

Query OK, 1 row affected (0.05 sec)

mysql> SELECT @qqq;
+------+
| @qqq |
+------+
| 8 |
+------+
1 row in set (0.00 sec)