select value as 0 if not column is null mysql code example
Example: mysql return 0 if null
SELECT IFNULL(field, 0) AS field FROM products WHERE id = 1
SELECT IFNULL(SUM(field), 0) as field FROM products
SELECT IFNULL(field, 0) AS field FROM products WHERE id = 1
SELECT IFNULL(SUM(field), 0) as field FROM products