[MySQL]出現錯誤 1248 — Every derived table must have its own alias

SELECT 
 *
FROM (SELECT * FROM `users`)

執行子查詢時出現以下錯誤：

1248 — Every derived table must have its own alias

意似是每個生成的table都必須有自己的別名

SELECT 
 *
FROM (SELECT * FROM `users`) AS U

此時加上別名就解決了~~~