Question

求一分页存储过程

求一分页存储过程

Answer 1

CREATE PROCEDURE PrcPager
-- 获得某一页的数据 --
@currPage int = 1, --当前页页码 (即Top currPage)
@showColumn varchar(2000) = '*', --需要得到的字段 (即 column1,column2,......)
@tabName varchar(2000), --需要查看的表名 (即 from table_name)
@strCondition varchar(2000) = '', --查询条件 (即 where condition......) 不用加where关键字
@ascColumn varchar(100) = '', --排序的字段名 (即 order by column asc/desc)
@bitOrderType bit = 0, ---排序的类型 (0为升序,1为降序)
@pkColumn varchar(50) = '', --主键名称
@pageSize int = 20 --分页大小
AS
BEGIN -- 存储过程开始
-- 该存储过程需要用到的几个变量
DECLARE @strSql varchar(4000) --该存储过程最后执行的语句
DECLARE @strOrderType varchar(1000) --排序类型语句 (order by column asc或者order by column desc)
BEGIN
IF @bitOrderType = 1 -- bitOrderType=1即执行降序
BEGIN
SET @strOrderType = ' ORDER BY '+@ascColumn+' DESC'
END
ELSE
BEGIN
SET @strOrderType = ' ORDER BY '+@ascColumn+' ASC'
END
IF @currPage = 1 -- 如果是第一页
BEGIN
IF @strCondition != ''
SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+@showColumn+' FROM '+@tabName+
' WHERE '+@strCondition+@strOrderType
ELSE
SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+@showColumn+' FROM '+@tabName+@strOrderType
END
ELSE -- 其他页
BEGIN
IF @strCondition !=''
--SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+@showColumn+' FROM '+@tabName+
--' WHERE ('+@strCondition+') AND '+@pkColumn+' not in (SELECT TOP '+STR((@currPage-1)*@pageSize)+
--' '+@pkColumn+' FROM '+@tabName+' WHERE '+@strCondition+@strOrderType+')'+@strOrderType
SET @strSql ='select top '+str(@pageSize)+' '+@showColumn+' from (select top '+str(@currPage*@pageSize)+@showColumn+' from '
+@tabName+' WHERE ('+@strCondition+') '+@strOrderType+') as temp where '+@pkColumn+' not in(SELECT TOP '+STR((@currPage-1)*@pageSize)
+' '+@pkColumn+ ' FROM '+@tabName+' WHERE ('+@strCondition+') ' +@strOrderType+')'
ELSE
--SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+@showColumn+' FROM '+@tabName+
--' WHERE '+@pkColumn+' not in(SELECT TOP '+STR((@currPage-1)*@pageSize)+' '+@pkColumn+
--' FROM '+@tabName+@strOrderType+')'+@strOrderType
SET @strSql ='select top '+str(@pageSize)+' '+@showColumn+' from (select top '+str(@currPage*@pageSize)+@showColumn+' from '+@tabName+@strOrderType+') as temp'
+' where '+@pkColumn+' not in(SELECT TOP '+STR((@currPage-1)*@pageSize)+' '+@pkColumn+ ' FROM '+@tabName+@strOrderType+')'
END
END
EXEC (@strSql)
print @strSql
END -- 存储过程结束

GO