Question

我是Oracle新手，我正在尝试复制一种非常有用的查询类型，我总是在SQL Server中使用它。

我正在尝试在Oracle中找到此查询的等效项

; With tablename as (
Select 
Column1 ,
Column2
From table1
) 
, with tablename2 as (
Select 
column3,
Column4
)
Select 
Column 2 ,
column 4
from Tablename t1
left outer join tablename t2
on t1.column1 = t2.column3

Answer 1

您有一些错误（列名称中的空格，缺少FROM，...）。这应该有效：

WITH tablename AS (SELECT Column1, Column2 FROM table1),
     tablename2 AS (SELECT column3, Column4 FROM table2)
SELECT Column2, column4
  FROM Tablename t1 LEFT OUTER JOIN tablename t2 ON t1.column1 = t2.column3

;在Oracle中使用tablename作为（..）等效项

1 个答案: