• 查询分页操作的一个通用存储过程


      1 USE [XXXXXXXX.BbbbbbbbCcccccccc.Dataware]
      2 GO
      3 /****** Object:  StoredProcedure [dbo].[usp_CommonDataResourcePaged]    Script Date: 2018/4/20 9:01:14 ******/
      4 SET ANSI_NULLS ON
      5 GO
      6 SET QUOTED_IDENTIFIER ON
      7 GO
      8 -- =============================================
      9 -- Author:        <PatrickLiu>
     10 -- Create date: <2018-4-16 14:21>
     11 -- Description:    <通用的数据分页存储过程>
     12 -- =============================================
     13 ALTER PROCEDURE [dbo].[usp_CommonDataResourcePaged]
     14 (
     15     @TableName          nvarchar(200),           ----要显示的表或多个表的连接
     16     @FieldList          nvarchar(1500) = '*',    ----要显示的字段列表
     17     @PageSize           int = 20,                ----每页显示的记录个数
     18     @PageNumber         int = 1,                 ----要显示那一页的记录
     19     @SortFields         nvarchar(1000) = null,   ----排序字段列表或条件
     20     @EnabledSort        bit = 0,                 ----排序方法,0为升序,1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)--程序传参如:' SortA Asc,SortB Desc,SortC ')
     21     @QueryCondition     nvarchar(1500) = null,   ----查询条件,不需WHERE
     22     @Primarykey         nvarchar(50),            ----主表的主键
     23     @EnabledDistinct    bit = 0,                 ----是否添加查询字段的 DISTINCT 默认0不添加/1添加
     24     @PageCount          int = 1 output,          ----查询结果分页后的总页数
     25     @RecordCount        int = 1 output           ----查询到的记录数
     26 )
     27 AS
     28     SET NOCOUNT ON
     29     Declare @SqlResult nvarchar(1000)        ----存放动态生成的SQL语句
     30     Declare @SqlTotalCount nvarchar(1000)        ----存放取得查询结果总数的查询语句
     31     Declare @SqlStartOrEndID     nvarchar(1000)        ----存放取得查询开头或结尾ID的查询语句
     32     
     33     Declare @SortTypeA nvarchar(10)    ----数据排序规则A
     34     Declare @SortTypeB nvarchar(10)    ----数据排序规则B
     35     
     36     Declare @SqlDistinct nvarchar(50)         ----对含有DISTINCT的查询进行SQL构造
     37     Declare @SqlCountDistinct nvarchar(50)          ----对含有DISTINCT的总数查询进行SQL构造
     38     
     39     declare @timediff datetime  --耗时测试时间差
     40     SELECT @timediff=getdate()
     41     
     42     if @EnabledDistinct  = 0
     43         begin
     44             set @SqlDistinct = 'SELECT '
     45             set @SqlCountDistinct = 'Count(*)'
     46         end
     47     else
     48         begin
     49             set @SqlDistinct = 'SELECT DISTINCT '
     50             set @SqlCountDistinct = 'Count(DISTINCT '+@Primarykey+')'
     51         end
     52     
     53     if @EnabledSort=0
     54         begin
     55             set @SortTypeB=' ASC '
     56             set @SortTypeA=' DESC '
     57         end
     58     else
     59         begin
     60             set @SortTypeB=' DESC '
     61             set @SortTypeA=' ASC '
     62         end
     63     
     64     --------生成查询语句--------
     65     --此处@SqlTotalCount为取得查询结果数量的语句
     66     if @QueryCondition is null or @QueryCondition=''     --没有设置显示条件
     67         begin
     68             set @SqlResult =  @FieldList + ' From ' + @TableName
     69             set @SqlTotalCount = @SqlDistinct+' @RecordCount='+@SqlCountDistinct+' FROM '+@TableName
     70             set @SqlStartOrEndID = ' From ' + @TableName
     71         end
     72     else
     73         begin
     74             set @SqlResult = + @FieldList + ' From ' + @TableName + ' WHERE (1>0) and ' + @QueryCondition
     75             set @SqlTotalCount = @SqlDistinct+' @RecordCount='+@SqlCountDistinct+' FROM '+@TableName + ' WHERE (1>0) and ' + @QueryCondition
     76             set @SqlStartOrEndID = ' From ' + @TableName + ' WHERE (1>0) and ' + @QueryCondition
     77         end
     78     
     79     ----取得查询结果总数量-----
     80     exec sp_executesql @SqlTotalCount,N'@RecordCount int out ',@RecordCount out
     81 
     82     declare @TemporaryCount int --临时统计
     83     if @RecordCount = 0
     84         set @TemporaryCount = 1
     85     else
     86         set @TemporaryCount = @RecordCount
     87     
     88         --取得分页总数
     89         set @PageCount=(@TemporaryCount+@PageSize-1)/@PageSize
     90     
     91         /**当前页大于总页数 取最后一页**/
     92         if @PageNumber>@PageCount
     93             set @PageNumber=@PageCount
     94     
     95         --/*-----数据分页2分处理-------*/
     96         declare @pageIndex int --总数/页大小
     97         declare @lastcount int --总数%页大小 
     98     
     99         set @pageIndex = @TemporaryCount/@PageSize
    100         set @lastcount = @TemporaryCount%@PageSize
    101         if @lastcount > 0
    102             set @pageIndex = @pageIndex + 1
    103         else
    104             set @lastcount = @pagesize
    105     
    106         --//***显示分页
    107         if @QueryCondition is null or @QueryCondition=''     --没有设置显示条件
    108         begin
    109             if @pageIndex<2 or @PageNumber<=@pageIndex / 2 + @pageIndex % 2   --前半部分数据处理
    110                 begin 
    111                     if @PageNumber=1
    112                         set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName+' ORDER BY '+ @SortFields +' '+ @SortTypeB
    113                     else
    114                     begin
    115                         if @EnabledSort=1
    116                         begin                    
    117                         set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    118                             +' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    119                             +' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
    120                         end
    121                         else
    122                         begin
    123                         set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    124                             +' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    125                             +' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB 
    126                         end
    127                     end    
    128                 end
    129             else
    130                 begin
    131                 set @PageNumber = @pageIndex-@PageNumber+1 --后半部分数据处理
    132                     if @PageNumber <= 1 --最后一页数据显示                
    133                         set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@lastcount as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    134                             +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB 
    135                     else
    136                         if @EnabledSort=1
    137                         begin
    138                         set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    139                             +' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    140                             +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'
    141                             +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
    142                         end
    143                         else
    144                         begin
    145                         set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    146                             +' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    147                             +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'
    148                             +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB 
    149                         end
    150                 end
    151         end
    152     
    153         else --有查询条件
    154         begin
    155             if @pageIndex<2 or @PageNumber<=@pageIndex / 2 + @pageIndex % 2   --前半部分数据处理
    156             begin
    157                     if @PageNumber=1
    158                         set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName                        
    159                             +' WHERE 1=1 and ' + @QueryCondition + ' ORDER BY '+ @SortFields +' '+ @SortTypeB
    160                     else if(@EnabledSort=1)
    161                     begin                    
    162                         set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    163                             +' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    164                             +' WHERE (1=1) and ' + @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB
    165                     end
    166                     else
    167                     begin
    168                         set @SqlTotalCount=@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    169                             +' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM ('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-1) as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    170                             +' WHERE (1=1) and ' + @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeB+') AS TBMinID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeB 
    171                     end           
    172             end
    173             else
    174             begin 
    175                 set @PageNumber = @pageIndex-@PageNumber+1 --后半部分数据处理
    176                 if @PageNumber <= 1 --最后一页数据显示
    177                         set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@lastcount as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    178                             +' WHERE (1=1) and '+ @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB                     
    179                 else if(@EnabledSort=1)
    180                         set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    181                             +' WHERE '+@Primarykey+' >(SELECT MAX('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    182                             +' WHERE (1=1) and '+ @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB    
    183                 else
    184                         set @SqlTotalCount=@SqlDistinct+' * FROM ('+@SqlDistinct+' TOP '+ CAST(@PageSize as VARCHAR(4))+' '+ @FieldList+' FROM '+@TableName
    185                             +' WHERE '+@Primarykey+' <(SELECT MIN('+ @Primarykey +') FROM('+ @SqlDistinct+' TOP '+ CAST(@PageSize*(@PageNumber-2)+@lastcount as Varchar(20)) +' '+ @Primarykey +' FROM '+@TableName
    186                             +' WHERE (1=1) and '+ @QueryCondition +' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TBMaxID)'+' ORDER BY '+ @SortFields +' '+ @SortTypeA+') AS TempTB'+' ORDER BY '+ @SortFields +' '+ @SortTypeB            
    187             end    
    188         end
    189     
    190     ------返回查询结果-----
    191     exec sp_executesql @SqlTotalCount
    192     --SELECT datediff(ms,@timediff,getdate()) as 耗时
    193     print @SqlTotalCount
    194     SET NOCOUNT OFF
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  • 原文地址:https://www.cnblogs.com/yanglang/p/8894172.html
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