一个存储过程的需求是这样的：
1、取出三张表里的符合条件的数据，合成一张表，并对这一张表分页；
2、计算合成的这张表总共多少条数据
存储过程语句如下：
Create PROCEDURE? GetAnnouncementList
?? ?@pageSize int,
?? ?@pageIndex int
AS
BEGIN
--不返回影响的行数，提高性能--
?? ?SET NOCOUNT ON;
?? ?declare @rowCount int
--将数据查询出来放入临时表#temptable中，语法：“ select? 字段 into 临时表名 from ” --
select ROW_NUMBER()over (order by #temptable.CreatedOn desc)as tempNum,* into #temptable from
(select 'markNews' as mark,News.NewsID,News.NewsTitle,News.CreatedOn from dbo.News where CategoryID ='8b041bf4-24bf-4b35-85c7-f72717dc5752'
union all
select 'markActivity' as mark,Activities.ActivityID,Activities.Subject,Activities.CreatedOn from dbo.Activities where Activities.CheckStatus=1 and IsDeleted=0 and Activities.RealEndTime>(select GETDATE())
union all
select 'markTrain' as mark,Train.TrainID,Train.Subject,Train.CreatedOn from dbo.Train where CheckStatus=1 and Train.PlannedEndTime>(select GETDATE()))as #temptable
--计算临时表中的数据条数--
select @rowCount=COUNT(*) from #temptable
--对临时表中的数据分页读取-- select * from #temptable where #temptable.tempNum>(@pageIndex-1)*@pageSize and #temptable.tempNum<=(@pageIndex*@pageSize) return @rowCount END
（编辑：李大同）
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