数据库分页

//方案1：(利用Not In和SELECT TOP分页) ===========效率最高
SELECT TOP 页大小 *
FROM TestTable
WHERE (ID NOT IN
           (SELECT TOP 页大小*页数 id
          FROM 表
          ORDER BY id))
ORDER BY ID



//方案2：(利用ID大于多少和SELECT TOP分页）

SELECT TOP 页大小 *
FROM TestTable
WHERE (ID > (SELECT MAX(id)
          FROM (SELECT TOP 页大小*页数 id
                  FROM 表
                  ORDER BY id) AS T))
ORDER BY ID

//方案3：(利用SQL的游标存储过程分页)=================效率最差但是最常用




//方案4：存储过程分页

/*----------------------------------------------
*procedure name : prePageResult
*  author : ShiDili
*  create date : 2011-11-20
*/
CREATE PROCEDURE prcPageResult
-- 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) = 'id',                 --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 @strTemp varchar(1000)
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'
     SET @strTemp = '<(SELECT min'
END
ELSE
BEGIN
     SET @strOrderType = ' ORDER BY '+@ascColumn+' ASC'
     SET @strTemp = '>(SELECT max'
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+@strTemp+'('+@pkColumn+')'+' FROM (SELECT TOP '+STR((@currPage-1)*@pageSize)+
         ' '+@pkColumn+' FROM '+@tabName+@strOrderType+') AS TabTemp)'+@strOrderType
     ELSE
         SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+@showColumn+' FROM '+@tabName+
         ' WHERE '+@pkColumn+@strTemp+'('+@pkColumn+')'+' FROM (SELECT TOP '+STR((@currPage-1)*@pageSize)+' '+@pkColumn+
         ' FROM '+@tabName+@strOrderType+') AS TabTemp)'+@strOrderType id asc
END

END
EXEC (@strSql)
END  -- 存储过程结束
------------------------------------------------
GO