通用分页存储过程
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS OFF
GO /*
declare @P1 int
set @P1=NULL
exec sp_PageView @tbname = N\’v_Question_List\’, @FieldKey = N\’Id\’, @PageCurrent = 3, @PageSize = 10, @FieldShow = N\’\’, @FieldOrder = N\’Id\’, @Where = N\’ProjectId=3\’, @PageCount = @P1 output
select @P1
*/ ALTER 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.*\’
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\’)\’
SET @QUERYSTRING = 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
PRINT @QUERYSTRING
—执行查询
EXEC(@QUERYSTRING)
END
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
GO
SET ANSI_NULLS OFF
GO /*
declare @P1 int
set @P1=NULL
exec sp_PageView @tbname = N\’v_Question_List\’, @FieldKey = N\’Id\’, @PageCurrent = 3, @PageSize = 10, @FieldShow = N\’\’, @FieldOrder = N\’Id\’, @Where = N\’ProjectId=3\’, @PageCount = @P1 output
select @P1
*/ ALTER 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\’)\’
DECLARE @QUERYSTRING varchar(2000)
SET @QUERYSTRING = 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
PRINT @QUERYSTRING
—执行查询
EXEC(@QUERYSTRING)
END
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
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