問題的降臨時表

Question

我有一個腳本，沒有11線

Declare c Cursor For Select Distinct InvestmentId From dbo.Investment 
Open c 
DECLARE @InvestmentIdTemp INT 
Fetch next From c into @InvestmentIdTemp 

While @@Fetch_Status=0 Begin 
    Declare @tablevar table(col1 DATETIME) 
    insert into @tablevar(col1) EXEC dbo.CalculateActualUpdateDate @InvestmentIdTemp 
    UPDATE dbo.InvestmentData SET ActualUpdateDate =(SELECT TOP 1 col1 FROM @tablevar) WHERE InvestmentID=@InvestmentIdTemp 

    DROP table @tablevar 

    Fetch next From c into @InvestmentIdTemp 
End 

Close c 
Deallocate c 

工作，我有一個錯誤：

Msg 102, Level 15, State 1, Line 11 
Incorrect syntax near '@tablevar'. 

我怎樣才能刪除該表？

Answer 1

正如我所說的表變量是沒有真正的表在數據庫中，這意味着你不能「甩」他們。循環播放時，您可以在您的桌面上清空表格。你不需要處理這個變量。

Declare c Cursor For Select Distinct InvestmentId From dbo.Investment 
Open c 

DECLARE @InvestmentIdTemp INT 
Declare @tablevar table(col1 DATETIME) 

Fetch next From c into @InvestmentIdTemp 

While @@Fetch_Status=0 Begin 
    insert into @tablevar(col1) EXEC dbo.CalculateActualUpdateDate @InvestmentIdTemp 
    UPDATE dbo.InvestmentData SET ActualUpdateDate =(SELECT TOP 1 col1 FROM @tablevar) WHERE InvestmentID=@InvestmentIdTemp 

    delete @tablevar 

    Fetch next From c into @InvestmentIdTemp 
End 

Close c 
Deallocate c