我有一个这样的存储过程:
ALTER procedure [dbo].[carcallvalidation]
@carid nvarchar(100)=null
as begin SET NOCOUNT ON; select t.TBarcode, t.Paid,t.Status,t.DelDate from Transaction_tbl t where TBarcode=@carid declare @transid integer=null
select @transid= t1.transactID from Transaction_tbl t1 where TBarcode=@carid
if(select count(k.transactid) from KHanger_tbl k where k.transactid=@transid)>0
begin
return 1 end end
在执行此操作时,我会这样:
TBarcode Paid Status DelDate
-------------------- ----- ----------- -----------------------
57173621345 1 0 NULL while i am checking this value using vb.net code like
这个:
Dim dr As SqlDataReader
Dim payd As Integer
dr = cmdcarvalidation.ExecuteReader While dr.Read
If dr("Paid") Is DBNull.Value Then payd = 0 Else
payd = dr("Paid") If payd = 1 Then MsgBox("Payment Done") Exit Sub End If End If End While
但是付费值取为-1 ..但在数据库中我将此值设为1.然后我如何获得-1值..