储存程序

Question

I am using SQl-server 2012 and this code is inside in a Stored Procedure.

These are my SQL queries.I want to execute "Insert" query when "Update" query not executed. If Update query executed,then insert query should not be executed.

Update tblStock Set Balance= Balance +  @ReduceRawQty 
    Where LocCode=@LocCode 
    AND ItemCode=@rawitemcode 
    and CostPrice=@rawcostprice

Insert Into tblStock(LocCode, ItemCode, CostPrice, Balance,Transfer,PCode)
    Values(@LocCode,@rawitemcode,@RawCostPrice,@RawQty,0,@PCode)    

Is there any method to do this ,please help me

Answer 1

You can check @@ROWCOUNT to see how many rows were affected by the UPDATE statement:

UPDATE ...

IF @@ROWCOUNT = 0
    INSERT ...

Alternatively you can use EXISTS to check for a row first and decide which operation to perform:

IF EXISTS (SELECT 1 FROM tblStock WHERE LocCode=@LocCode AND ItemCode=@rawitemcode and CostPrice=@rawcostprice)
    UPDATE ...
ELSE
    INSERT ...