Топ-100
 

REPEAT LOOP

База данных: MySQL
Текст

Syntax:
[begin_label:] REPEAT
statement_list
UNTIL search_condition
END REPEAT [end_label]

The statement list within a REPEAT statement is repeated until the
search_condition expression is true. Thus, a REPEAT always enters the
loop at least once. statement_list consists of one or more statements,
each terminated by a semicolon (;) statement delimiter.

A REPEAT statement can be labeled. For the rules regarding label use,
see [HELP labels].

URL: https://dev.mysql.com/doc/refman/8.0/en/repeat.html

Пример

mysql> delimiter //

mysql> CREATE PROCEDURE dorepeat(p1 INT)
BEGIN
SET @x = 0;
REPEAT
SET @x = @x + 1;
UNTIL @x > p1 END REPEAT;
END
//
Query OK, 0 rows affected (0.00 sec)

mysql> CALL dorepeat(1000)//
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT @x//
+------+
| @x |
+------+
| 1001 |
+------+
1 row in set (0.00 sec)