📜  合并 sql 代码示例

📅  最后修改于: 2022-03-11 15:05:01.599000             🧑  作者: Mango

代码示例1
Return the first non-null value in a list:

SELECT COALESCE(NULL, NULL, NULL, 'W3Schools.com', NULL, 'Example.com');

-- output: W3Schools.com