mysql 变量声明的语法错误

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:

#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 '' at line 3

But for me, everything seems to be correct. i really don't have any clue! can anybody help?

thanks

Answer 1

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 ;

Answer 2

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

SET @x = 0;

Also, variables need to be prefixed with the @ symbol