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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- SQL code
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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- SQL code
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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- SQL code
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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- C# code
/// <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()); }
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- SQL code
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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- SQL code
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 ([email protected]+N')'[email protected],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,[email protected])IF @RecordCount IS NULLBEGIN DECLARE @sql nvarchar(4000) SET @sql=N'SELECT @RecordCount=COUNT(*)' +N' FROM [email protected] +N' [email protected] EXEC sp_executesql @sql,[email protected] int OUTPUT',@RecordCount OUTPUTEND--计算分页显示的TOPN值DECLARE @TopN varchar(20),@TopN1 varchar(20)SELECT @[email protected], @TopN1=(@PageCurrent-1)[email protected]--第一页直接显示IF @PageCurrent=1 EXEC(N'SELECT TOP [email protected] +N' [email protected] +N' FROM [email protected] +N' [email protected] +N' [email protected])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'',@[email protected] WHILE CHARINDEX(N',',@s)>0 SELECT @Field=LEFT(@s,CHARINDEX(N',',@s)-1), @s=STUFF(@s,1,CHARINDEX(N',',@s),N''), @[email protected]+N' AND [email protected][email protected], @[email protected]+N' AND [email protected]+N' IS NULL', @WhereString=REPLACE(@WhereString,@Field,[email protected]), @FieldOrder=REPLACE(@FieldOrder,@Field,[email protected]), @FieldShow=REPLACE(@FieldShow,@Field,[email protected]) SELECT @WhereString=REPLACE(@WhereString,@s,[email protected]), @FieldOrder=REPLACE(@FieldOrder,@s,[email protected]), @FieldShow=REPLACE(@FieldShow,@s,[email protected]), @Where1=STUFF(@Where1+N' AND [email protected][email protected],1,5,N''), @Where2=CASE WHEN @WhereString='' THEN N'WHERE (' ELSE @WhereString+N' AND (' [email protected]+N' IS [email protected]+N')' --执行查询 EXEC(N'SELECT TOP [email protected] +N' [email protected] +N' FROM [email protected] +N' a LEFT JOIN(SELECT TOP [email protected] +N' [email protected] +N' FROM [email protected] +N' a [email protected] +N' [email protected] +N')b ON [email protected] +N' [email protected] +N' [email protected])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)[email protected] + 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,[email protected]+' from '+ @TableName;--查询语句 -- IF (@WhereString! = '' or @WhereString!=null) BEGIN SET @[email protected] + ' where '+ @WhereString; SET @SqlString [email protected]+ ' where '+ @WhereString; END --第一次执行得到 --IF(@TotalRecord is null) -- BEGIN EXEC sp_executesql @totalCountSql,[email protected] 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