I'm getting a syntax error while trying to create a trigger. I'm far from MySQL expert but managed to create the following code based on info I found on stackoverflow. The purpose of the trigger is to check if the sales row relates to an auction item (rather than a buy now item) and if it does then calculate a premium of 10% on the sale price (insert the premium amount into the premium column). "listing_id" is the link between the listings table and sales listings table.
DELIMITER $$
CREATE TRIGGER add_premium
AFTER INSERT
ON sales_listings FOR EACH ROW
BEGIN
SET @listing_type := (SELECT listing_type
FROM listings
WHERE listings.listing_id = NEW.listing_id);
IF @listing_type = 'auction' THEN
NEW.premium = NEW.price * 0.1;
ELSE
NEW.premium = 0;
END IF;
END$$
DELIMITER;
This is the 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 '.premium = NEW.price * 0.1;
ELSE
NEW.premium = 0;
END IF;
' at line 9
What am I doing wrong?
An assignment needs to be preceded by SET
.
IF @listing_type = 'auction' THEN
SET NEW.premium = NEW.price * 0.1;
ELSE
SET NEW.premium = 0;
END IF;
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