sql - 如何将标准表与临时表连接起来

Question

我尝试将标准表与临时表连接起来：

这是我尝试过的：

with temp1 as (
select * from table T )

select * from temp1, t2.field
left join temp1 t2 on temp1.id1 = t2.id2

它不能正常工作。有任何想法吗 ？

谢谢你们。

Answer 1

sql 的语法是 select from where。您在此处写的内容为 select from select from。将 t2.field 移出 from 子句并进入 select。

with temp1 as (
select * from table T )

select temp1.*, t2.field from temp1
left join temp1 t2 on temp1.id1 = t2.id2

Answer 2

尝试这个

WITH TEMP1 AS (SELECT * FROM TABLET)
SELECT
      *
FROM
      TEMP1 LEFT JOIN T2 ON ( TEMP1.ID1 = T2.ID2 )