Question

I’m using MySQL, of course.

However, I’m unable to run any while loop in the text box in the browser to update records in a table – I’m getting an error.

DECLARE @count INT
SET @count = 0 
WHILE @count <2000 DO
    /* loop logic in here */
    SET @count = @count + 1;
END WHILE;

Is the above code wrong?

Here is the error:

MySQL said:

1064 – You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use

near ‘DECLARE @count INT SET @count = 0 WHILE @count <2000 DO
SET @count = @co’ at line 1

Answer 1

You can do this with a procedure like this :

DELIMITER $$
DROP PROCEDURE IF EXISTS test$$
CREATE PROCEDURE test()
BEGIN
 DECLARE count INT DEFAULT 0;
 WHILE count < 2000 DO
   /* statment */
   SET count = count + 1;
 END WHILE;
END$$
DELIMITER ;

mysql>call test();

Hope this help you.