mysql 如果为空则返回 0 - SQL 代码示例

📌 相关文章

📜 mysql 如果为空则返回 0 - SQL 代码示例

📅 最后修改于: 2022-03-11 15:05:35.411000 🧑 作者: Mango

SELECT IFNULL(field, 0) AS field FROM products WHERE id = 1

SELECT IFNULL(SUM(field), 0) as field FROM products