使用來自Long計算的值Select to Next語句？

Question

我有一個查詢（sp）需要很長時間才能執行：

例如，

Select name, age ,token1 from Mytable where id=2 //long calc.... 

//later on the same sp... 

select anotherCalc from Table2 where tokenId=token1 // token1 is from the prev query. 

如何將第一個查詢的值傳遞給第二個？

Ive tried : 

declare @tmp int 

Select name, age ,@tmp=token1 from Mytable where id=2 

但它不工作...

Answer 1

你不能混用select指派給變量與一個返回結果。如果第一個查詢只返回至多一行，您可以使用

SELECT @name = name, 
     @age = age, 
     @token1 = token1 
FROM Mytable 
WHERE id = 2 

IF(@@ROWCOUNT > 1) 
    RAISERROR('Multiple rows returned - Indeterminate result',16,1) 

/*Return result to client*/ 
SELECT @name AS name, 
     @age AS age, 
     @token1 AS token1 

SELECT anotherCalc 
FROM Table2 
WHERE tokenId = @token1