Question

I am trying to create a simple insert trigger from Products table to ProductPrice table, the sql fails with no error message:

CREATE TRIGGER productTrigger AFTER INSERT ON Products
    FOR EACH ROW 
BEGIN
    INSERT INTO ProductPriceHistory (CURRENT_DATE(), CURRENT_USER(), productCode, productName, productLine, productVendor, quantityInStock, buyPrice)
    VALUES (productCode, productName, productLine, productVendor, quantityInStock, buyPrice);
END 

Answer 1

To reference values from the newly inserted line, use the NEW keyword, and use the function calls as values, not as column names;

CREATE TRIGGER productTrigger AFTER INSERT ON Products
    FOR EACH ROW 
BEGIN
    INSERT INTO ProductPriceHistory (log_date, log_user, productCode, 
        productName, productLine, productVendor, quantityInStock, buyPrice)
    VALUES (CURRENT_DATE(), CURRENT_USER(), NEW.productCode, NEW.productName, 
        NEW.productLine, NEW.productVendor, NEW.quantityInStock, NEW.buyPrice);
END