对没有ID

Question

我需要确定哪些寄存器即将过期。我有一半的脚本显示即将到期的脚本，但我需要保存最终日期：

declare @FechaIngreso datetime --Variable to determinate begin
declare @FechaEgreso datetime --Variable End
declare @DiasExp Int --Days before Expire
set @DiasExp = 10
select @FechaIngreso = GETDATE() --Get the actual date
select @FechaEgreso = (select top 1 FEC_FINA from FA_DDERI where (DATEDIFF (dd, @FechaIngreso,FEC_FINA) ) = @DiasExp ) --heres the thing I select just 1 with top 1 cause I need save the final date to comparate the dates
select * from FA_DDERI where FEC_FINA = @FechaEgreso 
select  COUNT(*) from  FA_DDERI where  FEC_FINA = @FechaEgreso --this tell me how many lines get the condition

我需要以下条件：

if (select FEC_FINA from FA_DDERI where (DATEDIFF (dd, @FechaIngreso,FEC_FINA) ) = @DiasExp)
 print 'The Reso Will Expire'
 break
else
 continue
print'Any Reso will Expire'

这些表只有1个唯一列，而且它不是标识列

是否有控制语句来检查数据库中的每一行以证明条件？

Answer 1

我想你想要这个

 SELECT FEC_FINA, 
        CASE 
          WHEN DATEDIFF (dd, @FechaIngreso,FEC_FINA) ) = @DiasExp THEN 'The Reso Will Expire' 
          ELSE 'Any Reso will Expire' 
        END AS resultcol
 FROM FA_DDERI