使用存儲過程中的select語句賦值給參數

Question

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Alter procedure usp_ReportUpdates 

AS 
Declare @currentweek as varchar(255), @previousweek varchar(255) 

set @currentweek SELECT distinct fiscalweekqtr from fiscaltime where fiscalweekago=0; 
    set @previousweek SELECT distinct fiscalweekqtr from fiscaltime where fiscalweekago=1; 

此代碼在選擇工作時給出語法錯誤。我還要如何將選擇查詢的單數結果分配給@currentweek和@previousweek？

Answer 1

嘗試這樣，

SELECT @currentweek = fiscalweekqtr from fiscaltime where fiscalweekago=0; 
SELECT @previousweek = fiscalweekqtr from fiscaltime where fiscalweekago=1; 

Answer 2

這看起來像SQL Server語法。如果是這樣，我覺得這是你可能會尋找：

Alter procedure usp_ReportUpdates 
AS 
BEGIN 
    Declare @currentweek as varchar(255), 
      @previousweek varchar(255); 

    SELECT @currentweek = fiscalweekqtr from fiscaltime where fiscalweekago = 0; 
    SELECT @previousweek = fiscalweekqtr from fiscaltime where fiscalweekago = 1; 
END; 

你似乎缺少對查詢@previousweek的條件。這應該酌情填寫。

您的特定語法錯誤是因爲select語句是子查詢，所以應該放在括號內。但是，您不需要對此語句進行子查詢，如上所示。