记录一个古老的Sql分页过程

 /*
     根据单位ID获取排班信息
     For：WXX
     TIme：2017-11-22
 */
 ALTER proc [dbo].[proc_ScheduleInfo]
 @companyID nvarchar(20)='',    --单位ID
 @classLineId nvarchar(20)='',    --线路ID
 @vehicleId nvarchar(20)='',        --车辆ID
 @goTime nvarchar(30) ='',        --发车日期
 @pageIndex int=1,                --当前页
 @pageSize int=1000,                --页容量
 @numsCount int=0 output,        --总条数
 @pageCount int=0 output            --总页数

 As

 --declare @dateNow nvarchar(20)        --当前日期
 --DECLARE    @sql varchar(max)           --查询sql
 --DECLARE    @sqlCount varchar(max)      --查询countsql
 --DECLARE    @top int
 declare @countSql nvarchar(max)            --总条数SQL
 declare @infoSql nvarchar(max)        --数据SQL
 declare @pageSql nvarchar(max)        --分页SQL
 declare @whereSql nvarchar(max)        --条件SQL
 declare @execSql nvarchar(max)        --总条数执行SQL
 declare @couns nvarchar(max)

 set @whereSql = ' 1=1 '

 if(@companyID is not null and @companyID <>'')
     set @whereSql = @whereSql+' and companyID= '''+@companyID+''' '
 if(@classLineId is not null and @classLineId <>'')
     set @whereSql = @whereSql+' and classLineId = '+@classLineId+' '
 if(@vehicleId is not null and @vehicleId <>'')
     set @whereSql = @whereSql+' and vehicleId = '+@vehicleId+' '
 if(@goTime is not null and @goTime <>'')
     set @whereSql = @whereSql+' and date like '''+@goTime+'%'' '

  --查询总条数sql
  set @countSql = 'select @count=COUNT(1) from (

      select s.*, d.remark as dr  from
     (
         select * from Schedule where  '+@whereSql+'
     ) as s
     join Company as d on s.companyID = d.cNo
 ) as b '

 --查询数据sql
 set @infoSql = 'SELECT Top ('+CONVERT(nvarchar(10),@pageSize)+') * from (
             select row_number()over(order by date)rownumber,* from
     (
      select s.*, d.remark as dr  from
     (
         select * from Schedule where  '+@whereSql+'
     ) as s
     join Company as d on s.companyID = d.cNo
     ) as b '

 set @pageSql = ' ) as T
                 Where rownumber >= ('+CONVERT(nvarchar(10),@pageIndex)+'-1) * ('+CONVERT(nvarchar(10),@pageSize)+')+1 Order By rownumber'

 --总页数

 set @execSql = @countSql
 --select(@execSql) for xml path('')
 exec sp_executesql @execSql, N'@count int out', @couns out
 set @numsCount = @couns

 --分页查询
 --select(@infoSql+@whereSql+@pageSql) for xml path('')
 exec(@infoSql+@pageSql)

 --分页算法
 SET @pageCount = @numsCount % @pageSize;
 if (@pageCount =0)
 begin
     set @pageCount = @numsCount / @pageSize ;
 end
 else if(@numsCount<@pageSize)
 begin
     set @pageCount=1;
 end
 else
 begin
  set @pageCount = @numsCount / @pageSize + 1;
 end
 if (@pageIndex>@PageCount)
 begin
     set @pageIndex = @pageCount;
 end

好记性不如云存储。