求一分页相关的SQL语句 ？？
RT
例如 ，select 某表 ，一共有 800 条数据 。
我要取得上面 800 条数据的 1--100条数据，101--200条数据...... 这样的SQL语句怎么写啊 ？？？
即 ，“select * from 表 where xxx=yyy ？？？” 蓝色问号处 要怎么写，返回的就是 符合条件的第1--100条数据 ；再改成怎样 ，返回的就是符合条件的第101--200条数据 ；......
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select * from (select row_number() over(order by col1) rn,* from 你的表) twhere rn between 1 and 100--你的条件
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select * from (select row_number() over(order by 排序的列) row_id,* from tbwhere..........) as twhere row_id between 1 and 100
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select * from ( select row_number() over(order by 排序的列) rn,* from tb where xxx=yyy ) as awhere rn between 1 and 100
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/// <summary> /// 获得查询分页数据 /// </summary> public DataSet GetPageList(int pageSize, int currentPage, string strWhere, string filedOrder) { StringBuilder strSql = new StringBuilder(); if (currentPage > 0) { int topNum = pageSize * currentPage; strSql.Append("select top " + pageSize + " Id,Title,Author,Form,Keyword,Zhaiyao,ClassId,ImgUrl,Daodu,Content,Click,IsMsg,IsTop,IsRed,IsHot,IsSlide,IsLock,AddTime from Article"); strSql.Append(" where Id not in(select top " + topNum + " Id from Article"); if (strWhere.Trim() != "") { strSql.Append(" where " + strWhere); } strSql.Append(" order by " + filedOrder + ")"); if (strWhere.Trim() != "") { strSql.Append(" and " + strWhere); } strSql.Append(" order by " + filedOrder); } else { strSql.Append("select top " + pageSize + " Id,Title,Author,Form,Keyword,Zhaiyao,ClassId,ImgUrl,Daodu,Content,Click,IsMsg,IsTop,IsRed,IsHot,IsSlide,IsLock,AddTime from Article"); if (strWhere.Trim() != "") { strSql.Append(" where " + strWhere); } strSql.Append(" order by " + filedOrder); } return DbHelperOleDb.Query(strSql.ToString()); }
[解决办法]
select * from (select row_number() over(order by col1) rn,* from 你的表) twhere rn between 1 and 100--你的条件
[解决办法]
2.分页SQL语句 select * from(select (row_number() OVER (ORDER BY tab.ID Desc)) as rownum,tab.* from 表名 As tab) As t where rownum between 起始位置 And 结束位置 set ANSI_NULLS ONset QUOTED_IDENTIFIER ONgoALTER PROC [dbo].[PROCE_PageView2000](@tbname nvarchar(100), --要分页显示的表名@FieldKey nvarchar(1000), --用于定位记录的主键(惟一键)字段,可以是逗号分隔的多个字段@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@WhereString nvarchar(1000)=N'', --查询条件@RecordCount int OUTPUT --总记录数)ASSET 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) RETURNEND--其他参数检查及规范IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1IF ISNULL(@PageSize,0)<1 SET @PageSize=10IF 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(@WhereString,N'')=N'' SET @WhereString=N''ELSE SET @WhereString=N'WHERE ('+@WhereString+N')'--如果@RecordCount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@RecordCount赋值)IF @RecordCount IS NULLBEGIN DECLARE @sql nvarchar(4000) SET @sql=N'SELECT @RecordCount=COUNT(*)' +N' FROM '+@tbname +N' '+@WhereString EXEC sp_executesql @sql,N'@RecordCount int OUTPUT',@RecordCount OUTPUTEND--计算分页显示的TOPN值DECLARE @TopN varchar(20),@TopN1 varchar(20)SELECT @TopN=@PageSize, @TopN1=(@PageCurrent-1)*@PageSize--第一页直接显示IF @PageCurrent=1 EXEC(N'SELECT TOP '+@TopN +N' '+@FieldShow +N' FROM '+@tbname +N' '+@WhereString +N' '+@FieldOrder)ELSEBEGIN --处理别名 IF @FieldShow=N'*' SET @FieldShow=N'a.*' --生成主键(惟一键)处理条件 DECLARE @Where1 nvarchar(4000),@Where2 nvarchar(4000), @s nvarchar(1000),@Field sysname SELECT @Where1=N'',@Where2=N'',@s=@FieldKey WHILE CHARINDEX(N',',@s)>0 SELECT @Field=LEFT(@s,CHARINDEX(N',',@s)-1), @s=STUFF(@s,1,CHARINDEX(N',',@s),N''), @Where1=@Where1+N' AND a.'+@Field+N'=b.'+@Field, @Where2=@Where2+N' AND b.'+@Field+N' IS NULL', @WhereString=REPLACE(@WhereString,@Field,N'a.'+@Field), @FieldOrder=REPLACE(@FieldOrder,@Field,N'a.'+@Field), @FieldShow=REPLACE(@FieldShow,@Field,N'a.'+@Field) SELECT @WhereString=REPLACE(@WhereString,@s,N'a.'+@s), @FieldOrder=REPLACE(@FieldOrder,@s,N'a.'+@s), @FieldShow=REPLACE(@FieldShow,@s,N'a.'+@s), @Where1=STUFF(@Where1+N' AND a.'+@s+N'=b.'+@s,1,5,N''), @Where2=CASE WHEN @WhereString='' THEN N'WHERE (' ELSE @WhereString+N' AND (' END+N'b.'+@s+N' IS NULL'+@Where2+N')' --执行查询 EXEC(N'SELECT TOP '+@TopN +N' '+@FieldShow +N' FROM '+@tbname +N' a LEFT JOIN(SELECT TOP '+@TopN1 +N' '+@FieldKey +N' FROM '+@tbname +N' a '+@WhereString +N' '+@FieldOrder +N')b ON '+@Where1 +N' '+@Where2 +N' '+@FieldOrder)END MSSQL2005set ANSI_NULLS ONset QUOTED_IDENTIFIER ONgoALTER PROCEDURE [dbo].[PROCE_SQL2005PAGECHANGE]( @TableName varchar(50), --表名 @ReFieldsStr varchar(200) = '*', --字段名(全部字段为*) @OrderString varchar(200), --排序字段(必须!支持多字段不用加order by) @WhereString varchar(500) =N'', --条件语句(不用加where) @PageSize int, --每页多少条记录 @PageIndex int = 1 , --指定当前为第几页 @TotalRecord int output --返回总记录数)AS BEGIN --处理开始点和结束点 Declare @StartRecord int; Declare @EndRecord int; Declare @TotalCountSql nvarchar(500); Declare @SqlString nvarchar(2000); set @StartRecord = (@PageIndex-1)*@PageSize + 1 set @EndRecord = @StartRecord + @PageSize - 1 SET @TotalCountSql= N'select @TotalRecord = count(*) from ' + @TableName;--总记录数语句 SET @SqlString = N'(select row_number() over (order by '+ @OrderString +') as rowId,'+@ReFieldsStr+' from '+ @TableName;--查询语句 -- IF (@WhereString! = '' or @WhereString!=null) BEGIN SET @TotalCountSql=@TotalCountSql + ' where '+ @WhereString; SET @SqlString =@SqlString+ ' where '+ @WhereString; END --第一次执行得到 --IF(@TotalRecord is null) -- BEGIN EXEC sp_executesql @totalCountSql,N'@TotalRecord int out',@TotalRecord output;--返回总记录数 -- END ----执行主语句 set @SqlString ='select * from ' + @SqlString + ') as t where rowId between ' + ltrim(str(@StartRecord)) + ' and ' + ltrim(str(@EndRecord)); Exec(@SqlString) END
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[Quote=引用:]
引用:
select * from (select top 100 * from (select top 200 * from tb order by ID) order by ID desc) order by ID
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发现sql server比oracle要活跃的多啊！！！！
[解决办法]
select * from (select row_number() over(order by col1) rn,* from 你的表) twhere rn between 1 and 100--你的条件