邹建的分页存储过程--改了一下

    技术2022-05-11  131

    因为邹建的分页存储过程不能返回记录总数,所以每次分页还又要统计一次,所以自己在里面加了个返回记录数,这下就好用了。

    @iPageCount int OUTPUT  --定义输出变量,放在@QueryStr上面

    ....

    exec('select'+@FdShow+'from'+@QueryStr+@FdOrder) --统计记录数,放在--如果显示第一页...上面Select @iPageCount = @@rowcount

    调用方法(ASP):

    MyConStr = "Driver={SQL Server};server=(local);Uid=artme;Pwd=***;Database=artme"    DIM MyComm,UserID,UserName    Set MyComm = Server.CreateObject("ADODB.Command")    with MyComm .ActiveConnection = MyConStr    'MyConStr是数据库连接字串 .CommandText      = "p_show" '指定存储过程名 .CommandType      = 4           '表明这是一个存储过程 .Prepared         = true        '要求将SQL命令先行编译 .Parameters.Append .CreateParameter("RETURN",2,4) .Parameters.Append .CreateParameter("@iPageCount",3,2) .Parameters.append .CreateParameter("@QueryStr",200,1,4000,"select * from zw_language") .Parameters.append .CreateParameter("@PageSize",3,1,4,5) .Parameters.append .CreateParameter("@PageCurrent",3,1,4,1) .Parameters.append .CreateParameter("@FdShow",200,1,4000) .Parameters.append .CreateParameter("@FdOrder",200,1,1000)       .Execute    end with   iCount = MyComm(1)   Response.write iCount

    ---------------------------------------------------------

    -----原存储过程

    set ANSI_NULLS ONset QUOTED_IDENTIFIER ONgo

    /*--实现分页的通用存储过程

    显示指定表、视图、查询结果的第X页对于表中主键或标识列的情况,直接从原表取数查询,其它情况使用临时表的方法如果视图或查询结果中有主键,不推荐此方法如果使用查询语句,而且查询语句使用了order by,则查询语句必须包含top 语句

    --邹建 2003.09(引用请保留此信息)--*/

    /*--调用示例exec p_show 'select * from jobs',5,3

    exec p_show 'select top 100 percent * from 地区资料 order by 地区名称',5,3,'地区编号,地区名称,助记码'--*/ALTER Proc [dbo].[p_show]@QueryStr nvarchar(4000),--表名、视图名、查询语句@PageSize int=10,--每页的大小(行数)@PageCurrent int=1,--要显示的页@FdShow nvarchar (4000)='',--要显示的字段列表,如果查询结果不需要标识字段,需要指定此值,且不包含标识字段@FdOrder nvarchar (1000)='',--排序字段列表@Des nvarchar(100)=''asset nocount ondeclare @FdName nvarchar(250)--表中的主键或表、临时表中的标识列名,@Id1 varchar(20),@Id2 varchar(20)--开始和结束的记录号,@Obj_ID int--对象ID--表中有复合主键的处理declare @strfd nvarchar(2000)--复合主键列表,@strjoin nvarchar(4000)--连接字段,@strwhere nvarchar(2000)--查询条件

    select @Obj_ID=object_id(@QueryStr),@FdShow=case isnull(@FdShow,'') when '' then ' *' else ' '+@FdShow end,@FdOrder=case isnull(@FdOrder,'') when '' then '' else ' order by '+@FdOrder+' '+@Des end,@QueryStr=case when @Obj_ID is not null then ' '+@QueryStr else ' ('+@QueryStr+') a' end

    --如果显示第一页,可以直接用top来完成if @PageCurrent=1beginselect @Id1=cast(@PageSize as varchar(20))exec('select top '+@Id1+@FdShow+' from '+@QueryStr+@FdOrder)returnend

    --如果是表,则检查表中是否有标识更或主键if @Obj_ID is not null and objectproperty(@Obj_ID,'IsTable')=1beginselect @Id1=cast(@PageSize as varchar(20)),@Id2=cast((@PageCurrent-1)*@PageSize as varchar(20))

    select @FdName=name from syscolumns where id=@Obj_ID and status=0x80if @@rowcount=0--如果表中无标识列,则检查表中是否有主键beginif not exists(select 1 from sysobjects where parent_obj=@Obj_ID and xtype='PK')goto lbusetemp--如果表中无主键,则用临时表处理

    select @FdName=name from syscolumns where id=@Obj_ID and colid in(select colid from sysindexkeys where @Obj_ID=id and indid in(select indid from sysindexes where @Obj_ID=id and name in(select name from sysobjects where xtype='PK' and parent_obj=@Obj_ID)))if @@rowcount>1--检查表中的主键是否为复合主键beginselect @strfd='',@strjoin='',@strwhere=''select @strfd=@strfd+',['+name+']',@strjoin=@strjoin+' and a.['+name+']=b.['+name+']',@strwhere=@strwhere+' and b.['+name+'] is null'from syscolumns where id=@Obj_ID and colid in(select colid from sysindexkeys where @Obj_ID=id and indid in(select indid from sysindexes where @Obj_ID=id and name in(select name from sysobjects where xtype='PK' and parent_obj=@Obj_ID)))select @strfd=substring(@strfd,2,2000),@strjoin=substring(@strjoin,5,4000),@strwhere=substring(@strwhere,5,4000)goto lbusepkendendendelsegoto lbusetemp

    /*--使用标识列或主键为单一字段的处理方法--*/lbuseidentity:exec('select top '+@Id1+@FdShow+' from '+@QueryStr+' where '+@FdName+' not in(select top '+@Id2+' '+@FdName+' from '+@QueryStr+@FdOrder+')'+@FdOrder)return

    /*--表中有复合主键的处理方法--*/lbusepk:exec('select '+@FdShow+' from(select top '+@Id1+' a.* from(select top 100 percent * from '+@QueryStr+@FdOrder+') aleft join (select top '+@Id2+' '+@strfd+' from '+@QueryStr+@FdOrder+') b on '+@strjoin+'where '+@strwhere+') a')return

    /*--用临时表处理的方法--*/lbusetemp:select @FdName='[ID_'+cast(newid() as varchar(40))+']',@Id1=cast(@PageSize*(@PageCurrent-1) as varchar(20)),@Id2=cast(@PageSize*@PageCurrent-1 as varchar(20))

    exec('select '+@FdName+'=identity(int,0,1),'+@FdShow+'into #tb from(select top 100 percent * from'+@QueryStr+@FdOrder+')aselect '+@FdShow+' from #tb where '+@FdName+' between '+@Id1+' and '+@Id2)


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