将 with cte 查询的结果插入临时表

Posted 2023-02-16

【中文标题】将 with cte 查询的结果插入临时表

【英文标题】：Inserting the result of a with cte query into a Temp Table

【发布时间】：2015-05-03 17:17:43

【问题描述】：

我想将此查询的结果存储到临时表中：

WITH cOldest AS
(
    SELECT 
       *, 
       ROW_NUMBER() OVER (PARTITION BY [MyKey] ORDER BY SomeColumn DESC) AS rnDOB 
    FROM MyTable
)
SELECT
    C.*
 ***    Insert into #MyTempTable *** This part doesn't work  
     FROM
     cOldest C
     WHERE
     C.rnDOB = 1

提前致谢。

【参考方案1】：

假设这是针对 SQL Server 的：CTE 仅适用于 one 语句 - 所以你不能同时拥有 SELECT 和 INSERT - 只需使用INSERT:

WITH cOldest AS
(
    SELECT 
       *, 
       ROW_NUMBER() OVER (PARTITION BY [MyKey] ORDER BY SomeColumn DESC) AS rnDOB 
    FROM MyTable
)
INSERT INTO #MyTempTable(Col1, Col2, ....., ColN)
  SELECT Col1, Col2, ...., ColN
  FROM cOldest C
  WHERE C.rnDOB = 1

这要求#MyTempTable 已经存在。如果您想使用 SELECT 创建它 - 使用以下语法：

WITH cOldest AS
(
 .....
)
SELECT c.*
INTO #MyTempTable
FROM cOldest c
WHERE C.rnDOB = 1

【讨论】：

谢谢马克！我意识到为了能够导出临时表，它必须是全局临时表。进入##MyTempTable @marc_s