我想添加0到数投在SQL Server 2005
DECLARE @AccPD Char(6)
DECLARE @PostMT Char(2)
SELECT @accpd ='201102'
select @PostMT = case when substring(@accpd,5,2) = '01'
then substring(@accpd,5,2) + 11
else CAST('00' AS Char(2)) + substring(@accpd,5,2)-1
end
SELECT @PostMT
,应返回01而不是1