PROSAGA码农传奇-HMI/人机接口-sql server如果存在问题

sql server如果存在问题

作者: 昵称为空呵呵
发布时间: 2025-06-16 01:22:27 (23天前)
转自：

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  <P>
    我想这就是你所追求的：
  </p>
   <pre>
    <code>
      USE [Product]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER Proc  [Controls].[spSiloSettings]
    @Silo int
    ,@PartNo Varchar (50)
    ,@Slow float output 
    ,@Close  float output 
    ,@errorout int output
AS
BEGIN
    declare @found bit = 0

set @errorout = 0

select @slow = slow
    , @close = close 
    , @found = 1
    from controls.TableA 
    where silo = @silo 
    and partno = @partno

if @found != 1
    begin

select top 1
          @found = 1
        , @slow= slow
        , @close = close
        From controls.TableB
        Where silo = @silo
        --order by something to ensure consistent results?

if @found = 1
        begin
            insert into controls.TableA (silo, partno, slow, close) 
            values (@silo, @partno ,@slow, @close)
        end
        else
        begin
            @errorout = 1 --neither A nor B held the value we were after
        end
    end

END

</code>
  </pre>
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