千万数量级分页存储过程（效果演示）

千万数量级分页存储过程（效果演示）

CREATE PROCEDURE CN5135_SP_Pagination
/*
***************************************************************
** 千万数量级分页存储过程 **
***************************************************************
参数说明:
1.Tables :表名称,视图
2.PrimaryKey :主关键字
3.Sort :排序语句，不带Order By 比如：NewsID Desc,OrderRows Asc
4.CurrentPage :当前页码
5.PageSize :分页尺寸
6.Filter :过滤语句，不带Where
7.Group :Group语句,不带Group By
效果演示：http://www.cn5135.com/_App/Enterprise/QueryResult.aspx
***************************************************************/
(
@Tables varchar(1000),
@PrimaryKey varchar(100),
@Sort varchar(200) = NULL,
@CurrentPage int = 1,
@PageSize int = 10,
@Fields varchar(1000) = ''*'',
@Filter varchar(1000) = NULL,
@Group varchar(1000) = NULL
)
AS
/*默认排序*/
IF @Sort IS NULL OR @Sort = ''''
SET @Sort = @PrimaryKey
DECLARE @SortTable varchar(100)
DECLARE @SortName varchar(100)
DECLARE @strSortColumn varchar(200)
DECLARE @operator char(2)
DECLARE @type varchar(100)
DECLARE @prec int
/*设定排序语句.*/
IF CHARINDEX(''DESC'',@Sort)>0
BEGIN
SET @strSortColumn = REPLACE(@Sort, ''DESC'', '''')
SET @operator = ''<=''
END
ELSE
BEGIN
IF CHARINDEX(''ASC'', @Sort) = 0
SET @strSortColumn = REPLACE(@Sort, ''ASC'', '''')
SET @operator = ''>=''
END
IF CHARINDEX(''.'', @strSortColumn) > 0
BEGIN
SET @SortTable = SUBSTRING(@strSortColumn, 0, CHARINDEX(''.'',@strSortColumn))
SET @SortName = SUBSTRING(@strSortColumn, CHARINDEX(''.'',@strSortColumn) + 1, LEN(@strSortColumn))
END
ELSE
BEGIN
SET @SortTable = @Tables
SET @SortName = @strSortColumn
END
SELECT @type=t.name, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
WHERE o.name = @SortTable AND c.name = @SortName
IF CHARINDEX(''char'', @type) > 0
SET @type = @type + ''('' + CAST(@prec AS varchar) + '')''
DECLARE @strPageSize varchar(50)
DECLARE @strStartRow varchar(50)
DECLARE @strFilter varchar(1000)
DECLARE @strSimpleFilter varchar(1000)
DECLARE @strGroup varchar(1000)
/*默认当前页*/
IF @CurrentPage < 1
SET @CurrentPage = 1
/*设置分页参数.*/
SET @strPageSize = CAST(@PageSize AS varchar(50))
SET @strStartRow = CAST(((@CurrentPage - 1)*@PageSize + 1) AS varchar(50))
/*筛选以及分组语句.*/
IF @Filter IS NOT NULL AND @Filter != ''''
BEGIN
SET @strFilter = '' WHERE '' + @Filter + '' ''
SET @strSimpleFilter = '' AND '' + @Filter + '' ''
END
ELSE
BEGIN
SET @strSimpleFilter = ''''
SET @strFilter = ''''
END
IF @Group IS NOT NULL AND @Group != ''''
SET @strGroup = '' GROUP BY '' + @Group + '' ''
ELSE
SET @strGroup = ''''
/*执行查询语句*/
EXEC(
''
DECLARE @SortColumn '' + @type + ''
SET ROWCOUNT '' + @strStartRow + ''
SELECT @SortColumn='' + @strSortColumn + '' FROM '' + @Tables + @strFilter + '' '' + @strGroup + '' ORDER BY '' + @Sort + ''
SET ROWCOUNT '' + @strPageSize + ''
SELECT '' + @Fields + '' FROM '' + @Tables + '' WHERE '' + @strSortColumn + @operator + '' @SortColumn '' + @strSimpleFilter + '' '' + @strGroup + '' ORDER BY '' + @Sort + ''
''
)
GO