MySQL COALESCE() Function
MySQL COALESCE() Function The COALESCE() function in MySQL returns the first non-null value from a list of expressions. If all arguments are NULL, it returns NULL. Syntax COALESCE(expr1, expr2, …, exprN) expr1, expr2, …, exprN: These are the expressions to evaluate. The function returns the first non-null expression from this list. It requires at least […]