Home > Database > Mysql Tutorial > body text

MySQL ITERATE statement example using LOOP

大家讲道理
Release: 2016-11-12 09:25:15
Original
1668 people have browsed it

mysql>
mysql>
mysql> DELIMITER //
mysql> CREATE PROCEDURE myProc (IN in_count INT)
    -> BEGIN
    ->     DECLARE count INT default 0;
    ->
    ->     increment: LOOP
    ->     SET count = count + 1;
    ->     IF count < 20 THEN ITERATE increment; END IF;
    ->     IF count > in_count THEN LEAVE increment;
    ->     END IF;
    ->     END LOOP increment;
    ->
    ->     SELECT count;
    -> END
    -> //
Query OK, 0 rows affected (0.00 sec)
 
mysql> DELIMITER ;
mysql>
mysql> call myProc(5);
+-------+
| count |
+-------+
|    20 |
+-------+
1 row in set (0.00 sec)
 
Query OK, 0 rows affected (0.00 sec)
 
mysql>
mysql> drop procedure myProc;
Query OK, 0 rows affected (0.00 sec)
 
mysql>
Copy after login


source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template