What's wrong with this MYSQL query? - mysql

Question

delimiter |
CREATE FUNCTION BASE64_DECODE (input BLOB)
RETURNS BLOB
CONTAINS SQL
DETERMINISTIC
SQL SECURITY INVOKER
BEGIN
DECLARE ret BLOB DEFAULT '';
DECLARE done TINYINT DEFAULT 0;
IF input IS NULL THEN
RETURN NULL;
END IF;
each_block:
WHILE NOT done DO BEGIN
DECLARE accum_value BIGINT UNSIGNED DEFAULT 0;
DECLARE in_count TINYINT DEFAULT 0;
DECLARE out_count TINYINT DEFAULT 3;
each_input_char:
WHILE in_count < 4 DO BEGIN
DECLARE first_char CHAR(1);
IF LENGTH(input) = 0 THEN
RETURN ret;
END IF;
SET first_char = SUBSTRING(input,1,1);
SET input = SUBSTRING(input,2);
BEGIN
DECLARE tempval TINYINT UNSIGNED;
DECLARE error TINYINT DEFAULT 0;
DECLARE base64_getval CURSOR FOR SELECT val FROM base64_data WHERE c = first_char;
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET error = 1;
OPEN base64_getval;
FETCH base64_getval INTO tempval;
CLOSE base64_getval;
IF error THEN
ITERATE each_input_char;
END IF;
SET accum_value = (accum_value << 6) + tempval;
END;
SET in_count = in_count + 1;
IF first_char = '=' THEN
SET done = 1;
SET out_count = out_count – 1;
END IF;
END; END WHILE;
WHILE out_count > 0 DO BEGIN
SET ret = CONCAT(ret,CHAR((accum_value & 0xff0000) >> 16));
SET out_count = out_count – 1;
SET accum_value = (accum_value << 8) & 0xffffff;
END; END WHILE;
END; END WHILE;
RETURN ret;
END |
The error I'm getting is:
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 '– 1;
END IF;
END; END WHILE;
' at line 52

Answer 1

WHILE loops in MySQL are simply terminated with END WHILE;. You've got END; END WHILE; which is incorrect.

Answer 2

That END before END WHILE; is causing the problem. You already have an END on line 46, so this one is trying to end the function. I'll bet you can just remove it.

Answer 3

The problem, silly as it was, was the use of non-standard symbols throughout. -s and 's were wrong format. Due to the encoding of the IDE I am using or something just as silly.
facepalm