千万数量级分页存储过程[转帖] |
Create PROCEDURE 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 |
***************************************************************/ |
( |
@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 |