如何使用 SQL 中的 "With" 子句创建 table

Question

我正在尝试使用 WITH 子句创建持久性 table，但是我遇到了错误。

对于上下文，我目前找到的答案是

CREATE TABLE my_table
AS 
WITH my_tables_data AS ( 
   SELECT another_table.data1 AS some_value 
   FROM another_table
) 
SELECT * 
FROM some_data;

但是，我收到一个错误

Msg 319, Level 15, State 1, Line 5 Incorrect syntax near the keyword 'with'. If this statement is a common table expression, an xmlnamespaces clause or a change tracking context clause, the previous statement must be terminated with a semicolon.

我的密码是

CREATE TABLE SalesOrdersPerYear  
WITH t1 AS (
    -- Define the CTE expression name and column list.  
    WITH Sales_CTE (SalesPersonID, BaseSalary)  
    AS  
    -- Define the CTE query.  
    (  
        SELECT SALES_PERSON.SALES_PERSON_ID, SALES_PERSON.BASE_SALARY  
        FROM SALES_PERSON  
        WHERE SALES_PERSON_ID IS NOT NULL  
    )  
    -- Define the outer query referencing the CTE name.  
    SELECT SalesPersonID, BaseSalary AS TotalSales  
    FROM Sales_CTE   
    ORDER BY SalesPersonID, BaseSalary;  
)

有人能就此提供一些指导吗？

非常感谢！

Answer 1

这不是 sql 服务器的有效语法。您可以使用 CREATE TABLE 创建 table 并指定列名和类型，或者您可以执行包含数据的 SELECT INTO 语句。

方法 1：创建 table 然后填充：

CREATE TABLE SalesOrdersPerYear 
( SalesPersonID int, BaseSalary float)
;

WITH Sales_CTE (SalesPersonID, BaseSalary)  
AS  
(  
    SELECT SALES_PERSON.SALES_PERSON_ID, SALES_PERSON.BASE_SALARY  
    FROM SALES_PERSON  
    WHERE SALES_PERSON_ID IS NOT NULL 
)  
insert into SalesOrdersPerYear  
SELECT SalesPersonID, BaseSalary AS TotalSales  
FROM Sales_CTE   
ORDER BY SalesPersonID, BaseSalary;

方法 2 - 一步到位

WITH Sales_CTE (SalesPersonID, BaseSalary)  
AS  
(  
    SELECT SALES_PERSON.SALES_PERSON_ID, SALES_PERSON.BASE_SALARY  
    FROM SALES_PERSON  
    WHERE SALES_PERSON_ID IS NOT NULL 
)  
select  SalesPersonID, BaseSalary AS TotalSales  
into SalesOrdersPerYear
FROM Sales_CTE   
ORDER BY SalesPersonID, BaseSalary;

当您需要详细说明 table（主键、索引、外键等

时，请使用方法 1

对更临时的事情使用方法 2。（您通常会使用临时 table，例如此处的 #SalesOrdersPerYear）。

无论哪种方式，数据现在都存储在您的 table 中，您可以再次使用它。

正在使用临时 tables:

-- Check for existence and drop first to avoid errors if it already exists.
if OBJECT_ID('tempdb..#SalesOrdersPerYear') is not null
    drop table #SalesOrdersPerYear

WITH Sales_CTE (SalesPersonID, BaseSalary)  
AS  
(  
    SELECT SALES_PERSON.SALES_PERSON_ID, SALES_PERSON.BASE_SALARY  
    FROM SALES_PERSON  
    WHERE SALES_PERSON_ID IS NOT NULL 
)  
select  SalesPersonID, BaseSalary AS TotalSales  
into #SalesOrdersPerYear
FROM Sales_CTE   
ORDER BY SalesPersonID, BaseSalary;

您也可以将其定义为 table 变量，这有点交叉了两种方法：

declare @SalesOrdersPerYear table
( SalesPersonID int, BaseSalary float)
;

WITH Sales_CTE (SalesPersonID, BaseSalary)  
AS  
(  
    SELECT SALES_PERSON.SALES_PERSON_ID, SALES_PERSON.BASE_SALARY  
    FROM SALES_PERSON  
    WHERE SALES_PERSON_ID IS NOT NULL 
)  
insert into @SalesOrdersPerYear  
SELECT SalesPersonID, BaseSalary AS TotalSales  
FROM Sales_CTE   
ORDER BY SalesPersonID, BaseSalary;

此选项将仅与此批次一起保留，不需要删除 - 就像任何其他变量一样。

Answer 2

CREATE VIEW AS my_view
AS 
WITH my_tables_data AS ( 
   SELECT another_table.data1 AS some_value 
   FROM another_table
) 

SELECT * 
FROM some_data; 

CREATE TABLE my_table AS 
SELECT * FROM my_view;

如何使用 SQL 中的 "With" 子句创建 table

How to create a table using "With" clause in SQL

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