with a as (select * from test)
select * from a;其实就是把一大堆重复用到的SQL语句放在with as 里面，取一个别名，后面的查询就可以用它本文共 148 字，大约阅读时间需要 1 分钟。
with a as (select * from test)
select * from a;其实就是把一大堆重复用到的SQL语句放在with as 里面，取一个别名，后面的查询就可以用它转载于:https://www.cnblogs.com/xushining/p/3711210.html