sql - 在 Select 查询中使用存储过程

Question

我有一个存储过程，我想在SELECT下面使用，但出现错误。

存储过程的输出是一个包含一列类型的表int

select * from users where resCode in (EXEC getUserResselers 1)

-- stored procedure
create procedure getUserResselers
    @userCode int
as
    ;WITH Directories AS (SELECT  code FROM Resseler WHERE code =(select resselerCode from Users where code=@userCode)
    UNION ALL SELECT d.code FROM Resseler d INNER JOIN Directories p ON  d.parent = p.code)
        SELECT  * FROM    Directories d

Answer 1

不支持从存储过程中直接选择。但是，这种类型的操作非常适合表值用户定义函数，它可能看起来像：

^{请注意，您拼错了“经销商”。我留下了拼写错误，以便您可以使用现有架构进行测试。}

CREATE FUNCTION getUserResselers
(
    @UserCode INT
)
RETURNS TABLE AS
RETURN(
    WITH Directories AS (

       SELECT  code FROM Reseller WHERE code = (select resselerCode from Users where code=@userCode)
       UNION ALL SELECT d.code FROM Resseler d INNER JOIN Directories p ON  d.parent = p.code
    )
    SELECT  * FROM   Directories
)

然后，您可以在查询中包含对该函数的连接，或者您可以继续使用IN，它应该类似于：

select * from users where resCode in (SELECT Code FROM getUserResselers(1));