SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
Create Procedure [dbo].[PageCut] 
 @TableName varchar(50),        --表名
 @Fields varchar(4000) = '*',    --字段名(全部字段为*)
 @OrderField varchar(4000),        --排序字段(必须!支持多字段)
 @sqlWhere varchar(4000) = Null,--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
 @TotalPage int output            --返回总页数 
AS
Begin

    Begin Tran --开始事务
    Declare @sql nvarchar(4000);
    Declare @totalRecord int;    
    --计算总记录数
    If (isnull(@SqlWhere,'')='')
        set @sql = 'select @totalRecord = count(*) from ' + @TableName
    Else
        set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' where ' + @sqlWhere
        
    EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--计算总记录数        
    --计算总页数
    Select @TotalPage=CEILING((@totalRecord+0.0)/@PageSize)
    If (isnull(@SqlWhere,'')='')
        set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName 
    Else
        set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName + ' where ' + @SqlWhere    
        
    --处理页数超出范围情况
    If @PageIndex<=0 
        Set @pageIndex = 1
    If @pageIndex>@TotalPage
        Set @pageIndex = @TotalPage
     --处理开始点和结束点
    Declare @StartRecord int
    Declare @EndRecord int
    Set @StartRecord = (@pageIndex-1)*@PageSize + 1
    Set @EndRecord = @StartRecord + @pageSize - 1
    
    --select CHARINDEX ('(','123456768')
    --SELECT SUBSTRING('1234567((68)',0,CHARINDEX ('(','123456768'))
    IF CHARINDEX('(',@TableName) <>0 SET @TableName=SUBSTRING(@TableName,0,CHARINDEX('(',@TableName))
    --继续合成sql语句
    Set @Sql = @Sql + ') as ' + @TableName + ' where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' +  Convert(varchar(50),@EndRecord)
    
    Exec(@Sql)
    ---------------------------------------------------
    If @@Error <> 0
      Begin
        RollBack Tran
        Return -1
      End
     Else
      Begin
        Commit Tran
        Return @totalRecord ---返回记录总数
      End    
end