求一个高效的存储过程(ms 2000)
要支持复杂的查询条件以及支持多字段任意排序
要支持复杂的查询条件以及支持多字段任意排序
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SQL code--TOP n 实现的通用分页存储过程(转自邹建)
CREATE PROC sp_PageView
@tbname sysname, --要分页显示的表名
@FieldKey nvarchar(1000), --用于定位记录的主键(惟一键)字段,可以是逗号分隔的多个字段
@PageCurrent int=1, --要显示的页码
@PageSize int=10, --每页的大小(记录数)
@FieldShow nvarchar(1000)='', --以逗号分隔的要显示的字段列表,如果不指定,则显示所有字段
@FieldOrder nvarchar(1000)='', --以逗号分隔的排序字段列表,可以指定在字段后面指定DESC/ASC
用于指定排序顺序
@Where nvarchar(1000)='', --查询条件
@PageCount int OUTPUT --总页数
AS
SET NOCOUNT ON
--检查对象是否有效
IF OBJECT_ID(@tbname) IS NULL
BEGIN
RAISERROR(N'对象"%s"不存在',1,16,@tbname)
RETURN
END
IF OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTable')=0
AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsView')=0
AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTableFunction')=0
BEGIN
RAISERROR(N'"%s"不是表、视图或者表值函数',1,16,@tbname)
RETURN
END--分页字段检查
IF ISNULL(@FieldKey,N'')=''
BEGIN
RAISERROR(N'分页处理需要主键(或者惟一键)',1,16)
RETURN
END--其他参数检查及规范
IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1
IF ISNULL(@PageSize,0)<1 SET @PageSize=10
IF ISNULL(@FieldShow,N'')=N'' SET @FieldShow=N'*'
IF ISNULL(@FieldOrder,N'')=N''
SET @FieldOrder=N''
ELSE
SET @FieldOrder=N'ORDER BY '+LTRIM(@FieldOrder)
IF ISNULL(@Where,N'')=N''
SET @Where=N''
ELSE
SET @Where=N'WHERE ('+@Where+N')'--如果@PageCount为NULL值,则计算总页数(这样设计可以只在第一次计算总页数,以后调用时,把总页数传回给存储过程,避免再次计算总页数,对于不想计算总页数的处理而言,可以给@PageCount赋值)
IF @PageCount IS NULL
BEGIN
DECLARE @sql nvarchar(4000)
SET @sql=N'SELECT @PageCount=COUNT(*)'
+N' FROM '+@tbname
+N' '+@Where
EXEC sp_executesql @sql,N'@PageCount int OUTPUT',@PageCount OUTPUT
SET @PageCount=(@PageCount+@PageSize-1)/@PageSize
END--计算分页显示的TOPN值
DECLARE @TopN varchar(20),@TopN1 varchar(20)
SELECT @TopN=@PageSize,
@TopN1=(@PageCurrent-1)*@PageSize--第一页直接显示
IF @PageCurrent=1
EXEC(N'SELECT TOP '+@TopN
+N' '+@FieldShow
+N' FROM '+@tbname
+N' '+@Where
+N' '+@FieldOrder)
ELSE
BEGIN
--处理别名
IF @FieldShow=N'*'
SET @FieldShow=N'a.*' --生成主键(惟一键)处理条件
DECLARE @Where1 nvarchar(4000),@Where2 nvarchar(4000),
@s nvarchar(1000),@Field sysname
SELECT @Where1=N'',@Where2=N'',@s=@FieldKey
WHILE CHARINDEX(N',',@s)>0
SELECT @Field=LEFT(@s,CHARINDEX(N',',@s)-1),
@s=STUFF(@s,1,CHARINDEX(N',',@s),N''),
@Where1=@Where1+N' AND a.'+@Field+N'=b.'+@Field,
@Where2=@Where2+N' AND b.'+@Field+N' IS NULL',
@Where=REPLACE(@Where,@Field,N'a.'+@Field),
@FieldOrder=REPLACE(@FieldOrder,@Field,N'a.'+@Field),
@FieldShow=REPLACE(@FieldShow,@Field,N'a.'+@Field)
SELECT @Where=REPLACE(@Where,@s,N'a.'+@s),
@FieldOrder=REPLACE(@FieldOrder,@s,N'a.'+@s),
@FieldShow=REPLACE(@FieldShow,@s,N'a.'+@s),
@Where1=STUFF(@Where1+N' AND a.'+@s+N'=b.'+@s,1,5,N''),
@Where2=CASE
WHEN @Where='' THEN N'WHERE ('
ELSE @Where+N' AND ('
END+N'b.'+@s+N' IS NULL'+@Where2+N')' --执行查询
EXEC(N'SELECT TOP '+@TopN
+N' '+@FieldShow
+N' FROM '+@tbname
+N' a LEFT JOIN(SELECT TOP '+@TopN1
+N' '+@FieldKey
+N' FROM '+@tbname
+N' a '+@Where
+N' '+@FieldOrder
+N')b ON '+@Where1
+N' '+@Where2
+N' '+@FieldOrder)
ENDSQL code--使用系统存储过程实现的通用分页存储过程(转自邹建)
CREATE PROC sp_PageView
@sql ntext, --要执行的sql语句
@PageCurrent int=1, --要显示的页码
@PageSize int=10, --每页的大小
@PageCount int OUTPUT --总页数
AS
SET NOCOUNT ON
DECLARE @p1 int
--初始化分页游标
EXEC sp_cursoropen
@cursor=@p1 OUTPUT,
@stmt=@sql,
@scrollopt=1,
@ccopt=1,
@rowcount=@PageCount OUTPUT--计算总页数
IF ISNULL(@PageSize,0)<1
SET @PageSize=10
SET @PageCount=(@PageCount+@PageSize-1)/@PageSize
IF ISNULL(@PageCurrent,0)<1 OR ISNULL(@PageCurrent,0)>@PageCount
SET @PageCurrent=1
ELSE
SET @PageCurrent=(@PageCurrent-1)*@PageSize+1--显示指定页的数据
EXEC sp_cursorfetch @p1,16,@PageCurrent,@PageSize--关闭分页游标
EXEC sp_cursorclose @p1
原作,爱新觉罗
http://blog.csdn.net/Fibona/archive/2007/03/02/1519480.aspx
http://www.cnblogs.com/Jamedy/archive/2007/04/08/320738.html
http://www.cnblogs.com/sleeping/archive/2008/07/08/509556.html
http://www.cnblogs.com/freeliver54/archive/2006/12/31/608858.html
http://www.cnblogs.com/virusswb/archive/2008/01/23/1049605.html
这个我昨天刚看到的 不错
set QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[Pro_Activities_GetPaged]
(
@WhereClause varchar (4000) , @OrderBy varchar (4000) , @PageIndex int , @PageSize int ,
@total int output
)
AS
BEGIN
DECLARE @PageLowerBound int
DECLARE @PageUpperBound int
-- Set the page bounds
SET @PageLowerBound = @PageSize * @PageIndex
SET @PageUpperBound = @PageLowerBound + @PageSize IF (@OrderBy is null or LEN(@OrderBy) < 1)
BEGIN
-- default order by to first column
SET @OrderBy = 'Activity_ID'
END
-- SQL Server 2005 Paging
DECLARE @SQL as nvarchar(4000)
SET @SQL = 'WITH PageIndex AS ('
SET @SQL = @SQL + ' SELECT'
IF @PageSize > 0
BEGIN
SET @SQL = @SQL + ' TOP ' + convert(nvarchar, @PageUpperBound)
END
SET @SQL = @SQL + ' ROW_NUMBER() OVER(ORDER BY ' + @OrderBy + ') as RowIndex'
SET @SQL = @SQL + ', A.Activity_ID'
SET @SQL = @SQL + ', A.Start_Date'
SET @SQL = @SQL + ', C.Company_Name'
SET @SQL = @SQL + ', A.Follow_Person'
SET @SQL = @SQL + ', A.Contact_Name'
SET @SQL = @SQL + ', A.Regardings'
SET @SQL = @SQL + ', A.Activity_type'
SET @SQL = @SQL + ', A.Phone'
SET @SQL = @SQL + ', A.Duty'
SET @SQL = @SQL + ', A.Details'
SET @SQL = @SQL + ', A.postulate'
SET @SQL = @SQL + ', A.Why'
SET @SQL = @SQL + ', A.Proceeding'
SET @SQL = @SQL + ', A.Result'
SET @SQL = @SQL + ', A.Chance'
SET @SQL = @SQL + ', A.Start_Time'
SET @SQL = @SQL + ', A.End_Time'
SET @SQL = @SQL + ', A.Ac_Duration_Hours'
SET @SQL = @SQL + ', A.Comment'
SET @SQL = @SQL + ', A.Creator'
SET @SQL = @SQL + ', A.DeptName'
SET @SQL = @SQL + ', A.IsPublic'
SET @SQL = @SQL + ', A.Banshichu'
SET @SQL = @SQL + ', A.QuDao'
SET @SQL = @SQL + ' FROM ActivitiesLog A
left join Companys C on A.Company_ID = C.Company_ID' IF LEN(@WhereClause) > 0
BEGIN
SET @SQL = @SQL + ' WHERE ' + @WhereClause
END
SET @SQL = @SQL + ' ) SELECT'
SET @SQL = @SQL + ' Activity_ID'
SET @SQL = @SQL + ', Start_Date'
SET @SQL = @SQL + ', Company_Name'
SET @SQL = @SQL + ', Follow_Person'
SET @SQL = @SQL + ', Contact_Name'
SET @SQL = @SQL + ', Regardings'
SET @SQL = @SQL + ', Activity_Type'
SET @SQL = @SQL + ', Phone'
SET @SQL = @SQL + ', Duty'
SET @SQL = @SQL + ', Details'
SET @SQL = @SQL + ', Postulate'
SET @SQL = @SQL + ', Why'
SET @SQL = @SQL + ', Proceeding'
SET @SQL = @SQL + ', Result'
SET @SQL = @SQL + ', Chance'
SET @SQL = @SQL + ', Start_Time'
SET @SQL = @SQL + ', End_Time'
SET @SQL = @SQL + ', Ac_Duration_Hours'
SET @SQL = @SQL + ', Comment'
SET @SQL = @SQL + ', Creator'
SET @SQL = @SQL + ', DeptName'
SET @SQL = @SQL + ', IsPublic'
SET @SQL = @SQL + ', Banshichu'
SET @SQL = @SQL + ', QuDao'
SET @SQL = @SQL + ' FROM PageIndex'
SET @SQL = @SQL + ' WHERE RowIndex > ' + convert(nvarchar, @PageLowerBound)
IF @PageSize > 0
BEGIN
SET @SQL = @SQL + ' AND RowIndex <= ' + convert(nvarchar, @PageUpperBound)
END
SET @SQL = @SQL + ' ORDER BY ' + @OrderBy
EXEC sp_executesql @SQL -- get row count
SET @SQL = 'SELECT @a=COUNT(1)'
SET @SQL = @SQL + ' FROM ActivitiesLog A
left join Companys C on A.Company_ID = C.Company_ID'
IF LEN(@WhereClause) > 0
BEGIN
SET @SQL = @SQL + ' WHERE ' + @WhereClause
END
EXEC sp_executesql @SQL,N'@a int output',@total output
END