将 with cte 查询的结果插入 Temp Table

Question

我想将此查询的结果存储到临时文件中 table:

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。

Answer 1

假设这是针对 SQL Server 的：CTE 仅适用于 one 语句 - 因此您不能同时拥有两者一个 SELECT 和一个 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 - 使用此语法：

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

将 with cte 查询的结果插入 Temp Table

Inserting the result of a with cte query into a Temp Table

sql-server

common-table-expression