/**//*
说明：1.支持多表查询 2.支持任意排序 3.不支持表别名
参考了
evafly920:[分享]千万数量级分页存储过程（效果演示）
地址：http://blog.csdn.net/evafly920/archive/2006/03/03/614813.aspx
IF(EXISTS(SELECT * FROM sysobjects WHERE [id]=OBJECT_ID(‘usp_PagingLarge‘) AND xtype=‘P‘))
DROP PROCEDURE usp_PagingLarge
*/
GO
CREATE PROCEDURE usp_PagingLarge
@TableNames VARCHAR(200), --表名，可以是多个表，但不能用别名
@PrimaryKey VARCHAR(100), --主键，可以为空，但@Order为空时该值不能为空
@Fields VARCHAR(200), --要取出的字段，可以是多个表的字段，可以为空，为空表示select *
@PageSize INT, --每页记录数
@CurrentPage INT, --当前页，0表示第1页
@Filter VARCHAR(200) = ‘‘, --条件，可以为空，不用填 where
@Group VARCHAR(200) = ‘‘, --分组依据，可以为空，不用填 group by
@Order VARCHAR(200) = ‘‘ --排序，可以为空，为空默认按主键升序排列，不用填 order by
AS
BEGIN
DECLARE @SortColumn VARCHAR(200)
DECLARE @Operator CHAR(2)
DECLARE @SortTable VARCHAR(200)
DECLARE @SortName VARCHAR(200)
IF @Fields = ‘‘
SET @Fields = ‘*‘
IF @Filter = ‘‘
SET @Filter = ‘WHERE 1=1‘
ELSE
SET @Filter = ‘WHERE ‘ + @Filter
IF @Group <>‘‘
SET @Group = ‘GROUP BY ‘ + @Group
IF @Order <> ‘‘
BEGIN
DECLARE @pos1 INT, @pos2 INT
SET @Order = REPLACE(REPLACE(@Order, ‘ asc‘, ‘ ASC‘), ‘ desc‘, ‘ DESC‘)
IF CHARINDEX(‘ DESC‘, @Order) > 0
IF CHARINDEX(‘ ASC‘, @Order) > 0
BEGIN
IF CHARINDEX(‘ DESC‘, @Order) < CHARINDEX(‘ ASC‘, @Order)
SET @Operator = ‘<=‘
ELSE
SET @Operator = ‘>=‘
END
ELSE
SET @Operator = ‘<=‘
ELSE
SET @Operator = ‘>=‘
SET @SortColumn = REPLACE(REPLACE(REPLACE(@Order, ‘ ASC‘, ‘‘), ‘ DESC‘, ‘‘), ‘ ‘, ‘‘)
SET @pos1 = CHARINDEX(‘,‘, @SortColumn)
IF @pos1 > 0
SET @SortColumn = SUBSTRING(@SortColumn, 1, @pos1-1)
SET @pos2 = CHARINDEX(‘.‘, @SortColumn)
IF @pos2 > 0
BEGIN
SET @SortTable = SUBSTRING(@SortColumn, 1, @pos2-1)
IF @pos1 > 0
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, @pos1-@pos2-1)
ELSE
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, LEN(@SortColumn)-@pos2)
END
ELSE
BEGIN
SET @SortTable = @TableNames
SET @SortName = @SortColumn
END
END
ELSE
BEGIN
SET @SortColumn = @PrimaryKey
SET @SortTable = @TableNames
SET @SortName = @SortColumn
SET @Order = @SortColumn
SET @Operator = ‘>=‘
END
DECLARE @type varchar(50)
DECLARE @prec int
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 @TopRows INT
SET @TopRows = @PageSize * @CurrentPage + 1
print @TopRows
print @Operator
EXEC(‘
DECLARE @SortColumnBegin ‘ + @type + ‘
SET ROWCOUNT ‘ + @TopRows + ‘
SELECT @SortColumnBegin=‘ + @SortColumn + ‘ FROM ‘ + @TableNames + ‘ ‘ + @Filter + ‘ ‘ + @Group + ‘ ORDER BY ‘ + @Order + ‘
SET ROWCOUNT ‘ + @PageSize + ‘
SELECT ‘ + @Fields + ‘ FROM ‘ + @TableNames + ‘ ‘ + @Filter + ‘ AND ‘ + @SortColumn + ‘‘ + @Operator + ‘@SortColumnBegin ‘ + @Group + ‘ ORDER BY ‘ + @Order + ‘
‘)
END
GO
--调用例子：
--1.单表/单排序
EXEC usp_PagingLarge ‘bigtable‘,‘d_id‘,‘d_id,d_title,d_content,d_time‘,20,1,‘‘,‘‘,‘d_id desc‘
--2.单表/多排序
EXEC usp_PagingLarge ‘bigtable‘,‘d_id‘,‘*‘,20,0,‘‘,‘‘,‘d_time asc,d_id desc‘
--3.多表/单排序
EXEC usp_PagingLarge ‘bigtable left join bigtable_author on bigtable.d_id=bigtable_author.BigTable_id‘, ‘bigtable.d_id‘, ‘bigtable.d_id,bigtable.d_title,bigtable.d_content,bigtable.d_time,bigtable_author.d_author‘, 20, 0, ‘‘, ‘‘, ‘bigtable.d_id asc‘
--4.多表/多排序
EXEC usp_PagingLarge ‘bigtable left join bigtable_author on bigtable.d_id=bigtable_author.BigTable_id‘, ‘bigtable.d_id‘, ‘bigtable.d_id,bigtable.d_title,bigtable.d_content,bigtable.d_time,bigtable_author.d_author‘, 20, 0, ‘‘, ‘‘, ‘bigtable.d_time asc,bigtable.d_id desc‘
与自定义分页结合例子：
/Files/jiny-z/Paging_Custom.rar
alter PROCEDURE SP_Pagination /* *************************************************************** ** 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.Fields:字段 6.Filter :过滤语句，不带Where 7.Group :Group语句,不带Group By 8.docount： 1返回总行数，0返回列表 ***************************************************************/ ( @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, @docount bit = 0 ) 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(200) DECLARE @strSimpleFilter varchar(200) DECLARE @strGroup varchar(200) /*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 = ‘‘ declare @cTemp NVarChar(1000) declare @PageCount int, @lineCount decimal CREATE TABLE #temp(linecount INT) set @cTemp = ‘insert into #temp (linecount) select count(*) FROM ‘ + @Tables + @strFilter + ‘ ‘ + @strGroup exec (@cTemp) select @lineCount = linecount from #temp drop table #temp if(@docount=1) begin select @lineCount ‘总行数‘ end else begin --得到总页数 set @PageCount = CEILING(@lineCount/@strPageSize) if @CurrentPage > @PageCount begin set @cTemp = ‘SELECT ‘ + @Fields + ‘ FROM ‘ + @Tables + ‘ WHERE 1>2 ‘ end else begin /*执行查询语句*/ set @cTemp = ‘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 + ‘‘ end --print @cTemp EXEC(@cTemp) end -----------------------------------------------------
分页查询的方法已经很多很多，在这里我也加入成为其中一员。
SQL Server中有一个Set Rowcount的的设置，它的意思是使命令的处理在响应指定的行数之后停止处理命令，利用这个特点，我们可以借用它来在一个千万行级数据表中实现高性能分页查询。先来说说实现方式： 1、我们来假定Table中有一个已经建立了索引的主键字段ID（整数型），我们将按照这个字段来取数据进行分页。 2、页的大小我们放在@PageSize中 3、当前页号我们放在@CurrentPage中 4、如何让记录指针快速滚动到我们要取的数据开头的那一行呢，这是关键所在！有了Set RowCount，我们就很容易实现了。 5、如果我们成功地滚动记录指针到我们要取的数据的开头的那一行，然后我们把那一行的记录的ID字段的值记录下来，那么，利用Top和条件，我们就很容易的得到指定页的数据了。当然，有了Set RowCount，我们难道还用Top么？ 看看Set Rowcount怎么来帮我们的忙吧：Declare @ID intDeclare @MoveRecords int[email protected]和@PageSize是传入参数Set @[email protected] * @PageSize+1--下面两行实现快速滚动到我们要取的数据的行，并把ID记录下来Set Rowcount @MoveRecordsSelect @ID=ID from Table1 Order by IDSet Rowcount @PageSize--最恨为了减少麻烦使用*了，但是在这里为了说明方便，暂时用一下Select * From Table1 Where ID>[email protected] Order By IDSet Rowcount 0 大家可以试试看，在一个1千W记录的表里面，一下子方翻页到第100页（每页100条），看看有多快！
分享]千万数量级分页存储过程（带效果演示）效果演示：http://www.cn5135.com/_App/Opportunities/QueryResult.aspx
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/Opportunities/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
注:
1)如表名参数为多表连接时,sort列必须指定表名;
2)只支持单字段排序,有朋友如果问为什么不做成可以多字段排序的,理论上确实有这种可能性,但需要以一定的效率损失为代价,而且会使方法过于复杂,如真有这种需要,完全可以写一个单独的分页存储过程,无论在性能还是复杂度上都比通用要简单.
3) 对非unique字段排序的支持,但必须设定一个PK字段(注:只要是unique字段都可以作为pk字段)
1if exists (select * from dbo.sysobjects where id = object_id(N‘[dbo].[Paging_RowCount]‘) and OBJECTPROPERTY(id, N‘IsProcedure‘) = 1) 2drop procedure [dbo].[Paging_RowCount] 3GO 4 5SET QUOTED_IDENTIFIER ON 6GO 7SET ANSI_NULLS ON 8GO 9--------------------------------------------------------------- 10-- 分页存储过程(使用RowCount) --edit by SiBen 11-- summary: 12-- 获取表或表集合的分页数据 13-- 当多表连接时,sort列必须指定表名 14--------------------------------------------------------------- 15 16CREATE PROCEDURE Paging_RowCount 17( 18@Tables varchar(1000), 19@PK varchar(100), 20@Sort varchar(200) = NULL, 21@PageNumber int = 1, 22@PageSize int = 10, 23@Fields varchar(1000) = ‘*‘, 24@Filter varchar(1000) = NULL, 25@Group varchar(1000) = NULL, 26@RecordCount int = 0 output 27) 28AS 29 30/*Default Sorting*/ 31IF @Sort IS NULL OR @Sort = ‘‘ 32 SET @Sort = @PK 33 34/*Find the @PK type*/ 35DECLARE @SortTable varchar(100) 36DECLARE @SortName varchar(100) 37DECLARE @strSortColumn varchar(200) 38DECLARE @operator char(2) 39DECLARE @type varchar(100) 40DECLARE @prec int 41 42/*Set sorting variables.*/ 43IF CHARINDEX(‘DESC‘,@Sort)>0 44 BEGIN 45 SET @strSortColumn = REPLACE(@Sort, ‘DESC‘, ‘‘) 46 SET @operator = ‘<‘ 47 END 48ELSE 49 BEGIN 50 IF CHARINDEX(‘ASC‘, @Sort) > 0 51 SET @strSortColumn = REPLACE(@Sort, ‘ASC‘, ‘‘) 52 ELSE 53 SET @strSortColumn = @Sort 54 55 SET @operator = ‘>‘ 56 END 57 58 59IF CHARINDEX(‘.‘, @strSortColumn) > 0 60 BEGIN 61 SET @SortTable = SUBSTRING(@strSortColumn, 0, CHARINDEX(‘.‘,@strSortColumn)) 62 SET @SortName = SUBSTRING(@strSortColumn, CHARINDEX(‘.‘,@strSortColumn) + 1, LEN(@strSortColumn)) 63 END 64ELSE 65 BEGIN 66 SET @SortTable = @Tables 67 SET @SortName = @strSortColumn 68 END 69 70SELECT @type=t.name, @prec=c.prec 71FROM sysobjects o 72JOIN syscolumns c on o.id=c.id 73JOIN systypes t on c.xusertype=t.xusertype 74WHERE o.name = @SortTable AND c.name = @SortName 75 76IF CHARINDEX(‘char‘, @type) > 0 77 SET @type = @type + ‘(‘ + CAST(@prec AS varchar) + ‘)‘ 78 79DECLARE @strPageSize varchar(50) 80DECLARE @strStartRow varchar(50) 81DECLARE @strFilter varchar(1000) 82DECLARE @strSimpleFilter varchar(1000) 83DECLARE @strGroup varchar(1000) 84 85/*Default Page Number*/ 86IF @PageNumber < 1 87 SET @PageNumber = 1 88 89/*Set paging variables.*/ 90SET @strPageSize = CAST(@PageSize AS varchar(50)) 91SET @strStartRow = CAST(((@PageNumber - 1)*@PageSize + 1) AS varchar(50)) 92 93/*Set filter & group variables.*/ 94IF @Filter IS NOT NULL AND @Filter != ‘‘ 95 BEGIN 96 SET @strFilter = ‘ WHERE ‘ + @Filter + ‘ ‘ 97 SET @strSimpleFilter = ‘ AND ‘ + @Filter + ‘ ‘ 98 END 99ELSE 100 BEGIN 101 SET @strSimpleFilter = ‘‘ 102 SET @strFilter = ‘‘ 103 END 104IF @Group IS NOT NULL AND @Group != ‘‘ 105 SET @strGroup = ‘ GROUP BY ‘ + @Group + ‘ ‘ 106ELSE 107 SET @strGroup = ‘‘ 108 109/*Get rows count.*/ 110DECLARE @str_Count_SQL nvarchar(500) 111SET @str_Count_SQL= ‘SELECT @TotalCount=count(*) FROM ‘ + @Tables + @strFilter 112EXEC sp_executesql @str_Count_SQL,N‘@TotalCount int=0 output‘,@RecordCount output 113 114/*Execute dynamic query*/ 115IF @Sort = @PK 116 BEGIN 117 EXEC( 118 ‘ 119 DECLARE @SortColumn ‘ + @type + ‘ 120 SET ROWCOUNT ‘ + @strStartRow + ‘ 121 SELECT @SortColumn=‘ + @strSortColumn + ‘ FROM ‘ + @Tables + @strFilter + ‘ ‘ + @strGroup + ‘ ORDER BY ‘ + @Sort + ‘ 122 SET ROWCOUNT ‘ + @strPageSize + ‘ 123 SELECT ‘ + @Fields + ‘ FROM ‘ + @Tables + ‘ WHERE ‘ + @strSortColumn + @operator + ‘= @SortColumn ‘ + @strSimpleFilter + ‘ ‘ + @strGroup + ‘ ORDER BY ‘ + @Sort + ‘ 124 ‘ 125 ) 126 END 127ELSE 128 BEGIN 129 EXEC( 130 ‘ 131 DECLARE @SortColumn ‘ + @type + ‘ 132 DECLARE @SortNullValue ‘ + @type + ‘ 133 DECLARE @PKStartValue int 134 SET @SortNullValue=CAST(‘‘‘‘ as ‘+ @type +‘) 135 SET ROWCOUNT ‘ + @strStartRow + ‘ 136 SELECT @SortColumn= isNull(‘ + @strSortColumn + ‘,@SortNullValue), @PKStartValue = ‘+ @PK +‘ FROM ‘ + @Tables + @strFilter + ‘ ‘ + @strGroup + ‘ ORDER BY ‘ + @Sort + ‘,‘+ @PK +‘ Desc 137 SET ROWCOUNT ‘ + @strPageSize + ‘ 138 SELECT ‘ + @Fields + ‘ FROM ‘ + @Tables + ‘ WHERE (isNull(‘ + @strSortColumn+‘,@SortNullValue)‘ + @operator + ‘ @SortColumn or (isNull(‘ + @strSortColumn+‘,@SortNullValue)[email protected] and ‘+ @PK +‘<[email protected]))‘ + @strSimpleFilter + ‘ ‘ + @strGroup + ‘ ORDER BY ‘ + @Sort + ‘,‘+ @PK +‘ Desc 139 ‘ 140 ) 141 END 142GO 143SET QUOTED_IDENTIFIER OFF 144GO 145SET ANSI_NULLS ON 146GO 147 148
ALTER PROC PageView
@tbname sysname, --要分页显示的表名
@FieldKey sysname, --用于定位记录的主键(惟一键)字段,只能是单个字段
@PageCurrent int=1, --要显示的页码
@PageSize int=10, --每页的大小(记录数)
@FieldShow nvarchar(1000)=‘‘, --以逗号分隔的要显示的字段列表,如果不指定,则显示所有字段
@FieldOrder nvarchar(1000)=‘‘, --以逗号分隔的排序字段列表,可以指定在字段后面指定DESC/ASC
--用于指定排序顺序
@Where nvarchar(1000)=‘‘, --查询条件
@PageCount int OUTPUT --总页数
AS
DECLARE @sql nvarchar(4000)
SET NOCOUNT ON
--检查对象是否有效
IF OBJECT_ID(@tbname) IS NULL
BEGIN
RAISERROR(N‘对象"%s"不存在‘,1,16,@tbname)
RETURN
END
IF OBJECTPROPERTY(OBJECT_ID(@tbname),N‘IsTable‘)=0
AND OBJECTPROPERTY(OBJECT_ID(@tbname),N‘IsView‘)=0
AND OBJECTPROPERTY(OBJECT_ID(@tbname),N‘IsTableFunction‘)=0
BEGIN
RAISERROR(N‘"%s"不是表、视图或者表值函数‘,1,16,@tbname)
RETURN
END
--分页字段检查
IF ISNULL(@FieldKey,N‘‘)=‘‘
BEGIN
RAISERROR(N‘分页处理需要主键（或者惟一键）‘,1,16)
RETURN
END
--其他参数检查及规范
IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1
IF ISNULL(@PageSize,0)<1 SET @PageSize=10
IF ISNULL(@FieldShow,N‘‘)=N‘‘ SET @FieldShow=N‘*‘
IF ISNULL(@FieldOrder,N‘‘)=N‘‘
SET @FieldOrder=N‘‘
ELSE
SET @FieldOrder=N‘ORDER BY ‘+LTRIM(@FieldOrder)
IF ISNULL(@Where,N‘‘)=N‘‘
SET @Where=N‘‘
ELSE
SET @Where=N‘WHERE (‘+@Where+N‘)‘
--如果@PageCount为NULL值,则计算总页数(这样设计可以只在第一次计算总页数,以后调用时,把总页数传回给存储过程,避免再次计算总页数,对于不想计算总页数的处理而言,可以给@PageCount赋值)
IF @PageCount IS NULL
BEGIN
SET @sql=N‘SELECT @PageCount=COUNT(*)‘
+N‘ FROM ‘+@tbname
+N‘ ‘+@Where
EXEC sp_executesql @sql,N‘@PageCount int OUTPUT‘,@PageCount OUTPUT
SET @PageCount=(@PageCount+@PageSize-1)/@PageSize
END
--计算分页显示的TOPN值
DECLARE @TopN varchar(20),@TopN1 varchar(20)
SELECT @TopN=@PageSize,
@TopN1=@PageCurrent*@PageSize
--第一页直接显示
IF @PageCurrent=1
EXEC(N‘SELECT TOP ‘+@TopN
+N‘ ‘+@FieldShow
+N‘ FROM ‘+@tbname
+N‘ ‘+@Where
+N‘ ‘+@FieldOrder)
ELSE
BEGIN
SELECT @PageCurrent=@TopN1,
@sql=N‘SELECT @[email protected],@s=CASE WHEN @n<‘+@TopN
+N‘ THEN @s+N‘‘,‘‘+QUOTENAME(RTRIM(CAST(‘+@FieldKey
+N‘ as varchar(8000))),N‘‘‘‘‘‘‘‘) ELSE N‘‘‘‘ END FROM ‘+@tbname
+N‘ ‘+@Where
+N‘ ‘+@FieldOrder
SET ROWCOUNT @PageCurrent
EXEC sp_executesql @sql,
N‘@n int,@s nvarchar(4000) OUTPUT‘,
@PageCurrent,@sql OUTPUT
SET ROWCOUNT 0
IF @sql=N‘‘
EXEC(N‘SELECT TOP 0‘
+N‘ ‘+@FieldShow
+N‘ FROM ‘+@tbname)
ELSE
BEGIN
SET @sql=STUFF(@sql,1,1,N‘‘)
--执行查询
EXEC(N‘SELECT TOP ‘+@TopN
+N‘ ‘+@FieldShow
+N‘ FROM ‘+@tbname
+N‘ WHERE ‘+@FieldKey
+N‘ IN(‘+@sql
+N‘) ‘+@FieldOrder)
END
END
时间： 2024-11-09 02:58:16