[mysql] SQL 오류 (1248): Every derived table must have its own alias

SQL 오류 (1248): Every derived table must have its own alias

서브쿼리에 ALIAS가 없어서 발생한다.

서브쿼리에 ALIAS 추가해주면 된다.

ex)

SELECT  *
FROM    (
            SELECT  SYSDATE() AS SYS_DATE
            FROM    DUAL
        ) A;