2分分页处理存储过程通用存储过程

1--/*----- 对数据进行了2分处理使查询前半部分数据与查询后半部分数据性能相同 -------*/
2 --/*-----存储过程 分页处理 2005-04-21修改 添加Distinct查询功能-------*/
3 --/*-----存储过程 分页处理 2005-05-18修改 多字段排序规则问题-------*/
4 --/*-----存储过程 分页处理 2005-06-15修改 多字段排序修改-------*/
5 ALTER PROCEDURE dbo.proc_ListPage
6 (
7 @tblName nvarchar(200), ----要显示的表或多个表的连接
8 @fldName nvarchar(500) = '*', ----要显示的字段列表
9 @pageSize int = 1, ----每页显示的记录个数
10 @page int = 10, ----要显示那一页的记录
11 @pageCount int = 1 output, ----查询结果分页后的总页数
12 @Counts int = 1 output, ----查询到的记录数
13 @fldSort nvarchar(200) = null, ----排序字段列表或条件
14 @Sort 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 ')
15 @strCondition nvarchar(1000) = null, ----查询条件,不需where
16 @ID nvarchar(150), ----主表的主键
17 @Dist bit = 0 ----是否添加查询字段的 DISTINCT 默认0不添加/1添加
18 )
19 AS
20 SET NOCOUNT ON
21 Declare @sqlTmp nvarchar(1000) ----存放动态生成的SQL语句
22 Declare @strTmp nvarchar(1000) ----存放取得查询结果总数的查询语句
23 Declare @strID nvarchar(1000) ----存放取得查询开头或结尾ID的查询语句
24
25 Declare @strSortType nvarchar(10) ----数据排序规则A
26 Declare @strFSortType nvarchar(10) ----数据排序规则B
27
28 Declare @SqlSelect nvarchar(50) ----对含有DISTINCT的查询进行SQL构造
29 Declare @SqlCounts nvarchar(50) ----对含有DISTINCT的总数查询进行SQL构造
30
31
32 if @Dist = 0
33 begin
34 set @SqlSelect = 'select '
35 set @SqlCounts = 'Count(*)'
36 end
37 else
38 begin
39 set @SqlSelect = 'select distinct '
40 set @SqlCounts = 'Count(DISTINCT '+@ID+')'
41 end
42
43
44 if @Sort=0
45 begin
46 set @strFSortType=' ASC '
47 set @strSortType=' DESC '
48 end
49 else
50 begin
51 set @strFSortType=' DESC '
52 set @strSortType=' ASC '
53 end
54
55
56
57 --------生成查询语句--------
58 --此处@strTmp为取得查询结果数量的语句
59 if @strCondition is null or @strCondition='' --没有设置显示条件
60 begin
61 set @sqlTmp = @fldName + ' From ' + @tblName
62 set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName
63 set @strID = ' From ' + @tblName
64 end
65 else
66 begin
67 set @sqlTmp = + @fldName + 'From ' + @tblName + ' where (1>0) ' + @strCondition
68 set @strTmp = @SqlSelect+' @Counts='+@SqlCounts+' FROM '+@tblName + ' where (1>0) ' + @strCondition
69 set @strID = ' From ' + @tblName + ' where (1>0) ' + @strCondition
70 end
71
72 ----取得查询结果总数量-----
73 exec sp_executesql @strTmp,N'@Counts int out ',@Counts out
74 declare @tmpCounts int
75 if @Counts = 0
76 set @tmpCounts = 1
77 else
78 set @tmpCounts = @Counts
79
80 --取得分页总数
81 set @pageCount=(@tmpCounts+@pageSize-1)/@pageSize
82
83 if @page>@pageCount
85 set @page=@pageCount
86
87 --/*-----数据分页2分处理-------*/
88 declare @pageIndex int --总数/页大小
89 declare @lastcount int --总数%页大小
90
91 set @pageIndex = @tmpCounts/@pageSize
92 set @lastcount = @tmpCounts%@pageSize
93 if @lastcount > 0
94 set @pageIndex = @pageIndex + 1
95 else
96 set @lastcount = @pagesize
97
98 --//***显示分页
99 if @strCondition is null or @strCondition='' --没有设置显示条件
100 begin
101 if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
102 begin
103 set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
104 +' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName
105 +' order by '+ @fldSort +' '+ @strFSortType+')'
106 +' order by '+ @fldSort +' '+ @strFSortType
107 end
108 else
109 begin
110 set @page = @pageIndex-@page+1 --后半部分数据处理
111 if @page <= 1 --最后一页数据显示
112 set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName
113 +' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
114 else
115 set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
116 +' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName
117 +' order by '+ @fldSort +' '+ @strSortType+')'
118
119 +' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
120 end
121 end
122
123 else --有查询条件
124 begin
125 if @pageIndex<2 or @page<=@pageIndex / 2 + @pageIndex % 2 --前半部分数据处理
126 begin
127 set @strTmp=@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName +' from '+@tblName
128 +' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-1) as Varchar(20)) +' '+ @ID +' from '+@tblName
129 +' Where (1>0) ' + @strCondition + ' order by '+ @fldSort +' '+ @strFSortType+')'
130 +' ' + @strCondition + ' order by '+ @fldSort +' '+ @strFSortType
131 end
132 else
133 begin
134 set @page = @pageIndex-@page+1 --后半部分数据处理
135 if @page <= 1 --最后一页数据显示
136 set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@lastcount as VARCHAR(4))+' '+ @fldName+' from '+@tblName
137 +' where (1>0) '+ @strCondition +' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
138 else
139 set @strTmp=@SqlSelect+' * from ('+@SqlSelect+' top '+ CAST(@pageSize as VARCHAR(4))+' '+ @fldName+' from '+@tblName
140 +' where '+@ID+' not in('+ @SqlSelect+' top '+ CAST(@pageSize*(@page-2)+@lastcount as Varchar(20)) +' '+ @ID +' from '+@tblName
141 +' where (1>0) '+ @strCondition +' order by '+ @fldSort +' '+ @strSortType+')'
142 + @strCondition +' order by '+ @fldSort +' '+ @strSortType+') AS TempTB'+' order by '+ @fldSort +' '+ @strFSortType
143 end
144 end
145
146------返回查询结果-----
147exec sp_executesql @strTmp
148--print @strTmp
149SET NOCOUNT OFF