syntax error for mysql declaration of variable

Question

CREATE PROCEDURE dorepeat(IN p1 INT)
BEGIN
  DECLARE x INT DEFAULT 0;
  REPEAT SET x = x + 1; UNTIL x > p1 END REPEAT;
END

I get an syntax error

Answer 1

Remove the DECLARE, you should be able to just do this:

SET @x = 0;

Also, variables need to be prefixed with the @ symbol

Answer 2

You need to temporarily change the delimiter so the MySQL client doesn't think you're done with your statement when it sees the semicolon on line 3:

DELIMITER //

CREATE PROCEDURE dorepeat(IN p1 INT)
BEGIN
  DECLARE x INT DEFAULT 0;
  REPEAT SET x = x + 1; UNTIL x > p1 END REPEAT;
END//

DELIMITER ;