-- 获取月度列表
if exists(select 1 from sysobjects where name = 'proc_GetDateMonthList' and type = 'p')drop proc proc_GetDateMonthList
GO
create proc proc_GetDateMonthList@BeginDate varchar(6)
,@EndDate varchar(6)
,@Delimiter varchar(1) = ','
as
/**/
declare@iBegin int, @iEnd int, @iBeginMon int, @iEndMon int, @iYear int, @iMon int, @iTempYear int, @iTempMon int, @iStart int , @iStop int,@sBeginMon varchar(2), @sEndMon varchar(2), @sResult varchar(8000), @s varchar(6)
beginif (LEN(@BeginDate) <> 6) or (LEN(@EndDate) <> 6)beginraiserror('日期格式错误！', 16, 1)returnendif (CAST(@EndDate as int) - cast(@BeginDate as int)) < 0beginraiserror('日期范围错误！', 16, 1)returnendif @BeginDate = @EndDatebeginselect @BeginDatereturnendselect @iBegin = SUBSTRING(@BeginDate, 1, 4), @iEnd = SUBSTRING(@EndDate, 1, 4)set @iYear = @iEnd - @iBeginif @iYear < 0beginraiserror('日期范围错误！', 16, 1)returnendif @iYear > 90beginraiserror('日期范围错误，最大跨年限度为90年！', 16, 1)returnend-- 开始处理set @sResult = ''select @iBeginMon = SUBSTRING(@BeginDate, 5, 2), @iEndMon = SUBSTRING(@EndDate, 5, 2)-- 不跨年if @iYear = 0beginset @iMon = @iEndMon - @iBeginMon   if @iMon > 0beginset @sResult = @BeginDateset @iTempMon = 0while @iTempMon < @iMon - 1beginset @s = CAST(@BeginDate as int) + 1set @sResult = @sResult + @Delimiter + @sset @iTempMon = @iTempMon + 1 endset @sResult = @sResult + @Delimiter + @EndDateend end-- 跨年if @iYear > 0begin-- 从开始到结束，每次+1，当月份 > 12 年度进1，月度归1select @iStart = @BeginDate, @iStop = @EndDatewhile @iStart <= @iStopbeginselect @iTempYear = SUBSTRING(convert(varchar(6),@iStart), 1, 4), @iTempMon = SUBSTRING(convert(varchar(6),@iStart), 5, 2)if @iTempMon > 12beginset @iStart = (@iTempYear + 1)*100 + 1endset @s = CONVERT(varchar(6), @iStart)--整合结果if LEN(@sResult) = 0set @sResult = @selseset @sResult = @sResult + @Delimiter + @sset @iStart = @iStart + 1endendselect @sResult
end
GO-- Test
exec proc_GetDateMonthList '201210', '201512'