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以下是一個存儲過程，它從具有以下數據的表“student_info”的名稱列中獲取記錄 –

mysql> Select * from Student_info;
+-----+---------+------------+------------+
| id  | Name    | Address    | Subject    |
+-----+---------+------------+------------+
| 101 | YashPal | Amritsar   | History    |
| 105 | Gaurav  | Chandigarh | Literature |
| 125 | Raman   | Shimla     | Computers  |
| 127 | Ram     | Jhansi     | Computers  |
+-----+---------+------------+------------+
4 rows in set (0.00 sec)

mysql> Delimiter //

mysql> CREATE PROCEDURE cursor_defined(OUT val VARCHAR(20))
    -> BEGIN
    -> DECLARE a,b VARCHAR(20);
    -> DECLARE cur_1 CURSOR for SELECT Name from student_info;
    -> DECLARE CONTINUE HANDLER FOR NOT FOUND
    -> SET b = 1;
    -> OPEN CUR_1;
    -> REPEAT
    -> FETCH CUR_1 INTO a;
    -> UNTIL b = 1
    -> END REPEAT;
    -> CLOSE CUR_1;
    -> SET val = a;
    -> END//
Query OK, 0 rows affected (0.04 sec)

mysql> Delimiter ;
mysql> Call cursor_defined2(@val);
Query OK, 0 rows affected (0.11 sec)

mysql> Select @val;
+------+
| @val |
+------+
| Ram |
+------+
1 row in set (0.00 sec)

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從上面的結果集中，我們可以看到 val 參數的值是“Ram”，因為它是“Name”列的最后一個值。

以上就是創建一個 MySQL 存儲過程，使用游標從表中獲取行？的詳細內容，更多請關注www.92cms.cn其它相關文章！