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好久沒(méi)有上來(lái)寫點(diǎn)東西了，今天正好有空，共享一些個(gè)人心得，就是關(guān)于分頁(yè)的存儲(chǔ)過(guò)程，這個(gè)問(wèn)題應(yīng)該是老生重談了，網(wǎng)上的通用存儲(chǔ)過(guò)程的類型已經(jīng)夠多了，但是，好象看到的基本上不能夠滿足一些復(fù)雜的SQL語(yǔ)句的分頁(yè)（也可能是我不夠見(jiàn)多識(shí)廣啊，呵呵），比如下面這句：
select '' as CheckBox, A.TargetID, A.TargetPeriod, Convert(varchar(10), B.BeginDate, 120) as BeginDate,
    Convert(varchar(10), B.EndDate, 120) as EndDate, C.SalesCode, C.SalesName, D.CatalogCode, D.CatalogName,
    E.OrgID, E.OrgName, F.OrgID as BranchOrgID, F.OrgCode as BranchOrgCode, F.OrgName as BranchOrgName,
    A.Amount, '' as DetailButton
from ChlSalesTarget as A
    left outer join ChlSalesTargetPeriod as B on A.TargetPeriod=B.TargetPeriod
    left outer join ChlSales as C on A.Sales=C.SalesCode
    left outer join ChlItemCatalog as D on A.ItemCatalog=D.CatalogCode
    left outer join ChlOrg as E on A.OrgID=E.OrgID
    left outer join ChlOrg as F on C.BranchOrgID=F.OrgID
where A.TargetPeriod >='200607' and A.TargetPeriod ='200608' and F.OrgCode like '%123%' and E.OrgCode like '%123%'
order by A.TargetPeriod desc,C.SalesName,D.CatalogName上面這句SQL里面有一些特殊情況，比如使用了Convert函數(shù)，而且沒(méi)有主鍵，有多表連接，有表別名，字段別名等等，這些情況處理起來(lái)可能比較棘手，當(dāng)然，其中的“'' as CheckBox”是我系統(tǒng)當(dāng)中的特例情況，用來(lái)做一些處理的。
    我這里提供一個(gè)自己開(kāi)發(fā)的通用分頁(yè)存儲(chǔ)過(guò)程，有什么好的建議和意見(jiàn)，大家請(qǐng)不吝指教。代碼如下：
通用分頁(yè)存儲(chǔ)過(guò)程----Sp_Paging
/**//*
============================================================
功能：    通用分頁(yè)存儲(chǔ)過(guò)程
參數(shù)：
    @PK    varchar(50),            主鍵，用來(lái)排序的單一字段，空的話，表示沒(méi)有主鍵，存儲(chǔ)過(guò)程將自動(dòng)創(chuàng)建標(biāo)識(shí)列主鍵
    @Fields    varchar(500),        要顯示的字段列表(格式如：ID,Code,Name)
    @Tables varchar(1000),        要使用的表集合(Org)
    @Where varchar(500),        查詢條件(Code like '100')
    @OrderBy varchar(100),        排序條件(支持多個(gè)排序字段，如：ID,Code desc,Name desc)
    @PageIndex int,                當(dāng)前要顯示的頁(yè)的頁(yè)索引，索引從1開(kāi)始，無(wú)記錄時(shí)為0。
    @PageSize int,                頁(yè)大小
創(chuàng)建者：Hollis Yao
創(chuàng)建日期：2006-08-06
備注：
============================================================
*/
Create PROCEDURE [dbo].[Sp_Paging]
    @PK    varchar(50)='',
    @Fields    varchar(500),
    @Tables varchar(1000),
    @Where varchar(500)='',
    @OrderBy varchar(100),
    @PageIndex int,
    @PageSize int
AS
--替換單引號(hào)，避免構(gòu)造SQL出錯(cuò)
set @Fields = replace(@Fields, '''', '''''')

--要執(zhí)行的SQL，切分為幾個(gè)字符串，避免出現(xiàn)長(zhǎng)度超過(guò)4k時(shí)的問(wèn)題
declare @SQL1 varchar(4000)
declare @SQL2 varchar(4000)

set @SQL1 = ''
set @SQL2 = ''
if @Where is not null and len(ltrim(rtrim(@Where))) > 0
    set @Where = ' where ' + @Where
else
    set @Where = ' where 1=1'

set @SQL1 = @SQL1 + ' declare @TotalCount int'    --聲明一個(gè)變量，總記錄數(shù)
set @SQL1 = @SQL1 + ' declare @PageCount int'    --聲明一個(gè)變量，總頁(yè)數(shù)
set @SQL1 = @SQL1 + ' declare @PageIndex int'    --聲明一個(gè)變量，頁(yè)索引
set @SQL1 = @SQL1 + ' declare @StartRow int'    --聲明一個(gè)變量，當(dāng)前頁(yè)第一條記錄的索引

set @SQL1 = @SQL1 + ' select @TotalCount=count(*) from ' + @Tables + @Where    --獲取總記錄數(shù)
set @SQL1 = @SQL1 + ' if @PageCount = 0 begin'    --如果記錄數(shù)為0，直接輸出空的結(jié)果集
set @SQL1 = @SQL1 + ' select ' + @Fields + ' from ' + @Tables + ' where 1>1'
set @SQL1 = @SQL1 + ' select 0 as PageIndex,0 as PageCount,' + convert(varchar, @PageSize) + ' as PageSize,0 as TotalCount'
set @SQL1 = @SQL1 + ' return end'

set @SQL1 = @SQL1 + ' set @PageCount=(@TotalCount+' + convert(varchar, @PageSize) + '-1)/' + convert(varchar, @PageSize)    --獲取總頁(yè)數(shù)
set @SQL1 = @SQL1 + ' set @PageIndex=' + convert(varchar, @PageIndex)    --設(shè)置正確的頁(yè)索引
set @SQL1 = @SQL1 + ' if @PageIndex0 set @PageIndex=1'
set @SQL1 = @SQL1 + ' if @PageIndex>@PageCount and @PageCount>0 set @PageIndex=@PageCount'
set @SQL1 = @SQL1 + ' set @StartRow=(@PageIndex-1)*' + convert(varchar, @PageSize) + '+1'

if (charindex(',', @OrderBy)=0 and charindex(@PK, @OrderBy)>0)
begin
    --****************************************************************************
    --****************不需要?jiǎng)?chuàng)建主鍵********************************************
    --****************************************************************************
    declare @SortDirection varchar(10)    --排序方向，>=：升序，=：倒序
    set @SortDirection = '>='
    if charindex('desc', @OrderBy) > 0
        set @SortDirection = '='
    set @SQL2 = @SQL2 + ' declare @Sort varchar(100)'    --聲明一個(gè)變量，用來(lái)記錄當(dāng)前頁(yè)第一條記錄的排序字段值
    set @SQL2 = @SQL2 + ' set rowcount @StartRow'    --設(shè)置返回記錄數(shù)截止到當(dāng)前頁(yè)的第一條
    set @SQL2 = @SQL2 + ' select @Sort=' + @PK + ' from ' + @Tables + @Where + ' order by ' + @OrderBy    --獲取當(dāng)前頁(yè)第一個(gè)排序字段值
    set @SQL2 = @SQL2 + ' set rowcount ' + convert(varchar, @PageSize)    --設(shè)置返回記錄數(shù)為頁(yè)大小
    set @Where = @Where + ' and ' + @PK + @SortDirection + '@Sort'
    set @SQL2 = @SQL2 + ' select ' + @Fields + ' from ' + @Tables + @Where + ' order by ' + @OrderBy    --輸出最終顯示結(jié)果
end
else
begin
    --****************************************************************************
    --*************需要?jiǎng)?chuàng)建自增長(zhǎng)主鍵******************************************
    --****************************************************************************
    set @SQL2 = @SQL2 + ' declare @EndRow int'
    set @SQL2 = @SQL2 + ' set @EndRow=@PageIndex*' + convert(varchar, @PageSize)
    set @SQL2 = @SQL2 + ' set rowcount @EndRow'
    set @SQL2 = @SQL2 + ' declare @PKBegin int'    --聲明一個(gè)變量，開(kāi)始索引
    set @SQL2 = @SQL2 + ' declare @PKEnd int'    --聲明一個(gè)變量，結(jié)束索引
    set @SQL2 = @SQL2 + ' set @PKBegin=@StartRow'
    set @SQL2 = @SQL2 + ' set @PKEnd=@EndRow'
    --****************************************************************************
    --************對(duì)特殊字段進(jìn)行轉(zhuǎn)換，以便可以插入到臨時(shí)表******************
    --****************************************************************************
    declare @TempFields varchar(500)
    set @TempFields=@Fields
    set @TempFields = replace(@TempFields, ''''' as CheckBox', '')
    set @TempFields = replace(@TempFields, ''''' as DetailButton', '')
    set @TempFields = replace(@TempFields, ''''' as Radio', '')
    set @TempFields = LTRIM(RTRIM(@TempFields))
    if left(@TempFields,1)=','    --去除最左邊的逗號(hào)
        set @TempFields = substring(@TempFields, 2, len(@TempFields))
    if right(@TempFields,1)=','    --去除最右邊的逗號(hào)
        set @TempFields = substring(@TempFields, 1, len(@TempFields)-1)

    set @SQL2 = @SQL2 + ' select identity(int,1,1) as PK,' + @TempFields + ' into #tb from ' + @Tables + @Where + ' order by ' + @OrderBy
    --****************************************************************************
    --********去除字段的表名前綴，當(dāng)有字段有別名時(shí)，只保留字段別名*********
    --****************************************************************************
    declare @TotalFields varchar(500)
    declare @tmp varchar(50)
    declare @i int
    declare @j int
    declare @iLeft int --左括號(hào)的個(gè)數(shù)
    declare @iRight int --右括號(hào)的個(gè)數(shù)
    set @i = 0
    set @j = 0
    set @iLeft = 0
    set @iRight = 0
    set @tmp = ''
    set @TotalFields = ''

    while (len(@Fields)>0)
    begin
        set @i = charindex(',', @Fields)

        --去除字段的表名前綴
        if (@i=0)
        begin
            --找不到逗號(hào)分割，即表示只剩下最后一個(gè)字段
            set @tmp = @Fields
        end
        else
        begin
            set @tmp = substring(@Fields, 1, @i)
        end
        set @j = charindex('.', @tmp)
        if (@j>0)
            set @tmp = substring(@tmp, @j+1, len(@tmp))
        --*******當(dāng)有字段有別名時(shí)，只保留字段別名*********

        --帶括號(hào)的情況要單獨(dú)處理，如Convert(varchar(10), B.EndDate, 120) as EndDate
        while (charindex('(', @tmp) > 0)
        begin
            set @iLeft = @iLeft + 1
            set @tmp = substring(@tmp, charindex('(', @tmp)+1, Len(@tmp))
        end
        while (charindex(')', @tmp) > 0)
        begin
            set @iRight = @iRight + 1
            set @tmp = substring(@tmp, charindex(')', @tmp)+1, Len(@tmp))
        end

        --當(dāng)括號(hào)恰好組隊(duì)的時(shí)候，才能進(jìn)行字段別名的處理
        if (@iLeft = @iRight)
        begin
            set @iLeft = 0
            set @iRight = 0
            --不對(duì)這幾個(gè)特殊字段作處理:CheckBox、DetailButton、Radio
            if (charindex('CheckBox', @tmp) = 0 and charindex('DetailButton', @tmp) = 0 and charindex('Radio', @tmp) = 0)
            begin
                --判斷是否有別名
                if (charindex('as', @tmp) > 0)--別名的第一種寫法，帶'as'的格式
                begin
                    set @tmp = substring(@tmp, charindex('as', @tmp)+2, len(@tmp))
                end
                else
                begin
                    if (charindex(' ', @tmp) > 0)--別名的第二種寫法，帶空格(" ")的格式
                    begin
                        while(charindex(' ', @tmp) > 0)
                        begin
                            set @tmp = substring(@tmp, charindex(' ', @tmp)+1, len(@tmp))
                        end
                    end
                end
            end
            set @TotalFields = @TotalFields + @tmp
        end
        if (@i=0)
            set @Fields = ''
        else
            set @Fields = substring(@Fields, @i+1, len(@Fields))

    end
    --print @TotalFields

    set @SQL2 = @SQL2 + ' select ' + @TotalFields + ' from #tb where PK between @PKBegin and @PKEnd order by PK'    --輸出最終顯示結(jié)果
    set @SQL2 = @SQL2 + ' drop table #tb'
end

--輸出“PageIndex(頁(yè)索引)、PageCount(頁(yè)數(shù))、PageSize(頁(yè)大小)、TotalCount(總記錄數(shù))”
set @SQL2 = @SQL2 + ' select @PageIndex as PageIndex,@PageCount as PageCount,'
                + convert(varchar, @PageSize) + ' as PageSize,@TotalCount as TotalCount'

--print @SQL1 + @SQL2
exec(@SQL1 + @SQL2)
如果使用這個(gè)通用分頁(yè)存儲(chǔ)過(guò)程的話，那么調(diào)用方法如下：
使用通用分頁(yè)存儲(chǔ)過(guò)程進(jìn)行分頁(yè)
/**//*
============================================================
功能：    獲取銷售目標(biāo)，根據(jù)條件
參數(shù)：
    @UserType int,
    @OrgID varchar(500),
    @TargetPeriodBegin nvarchar(50),
    @TargetPeriodEnd nvarchar(50),
    @BranchOrgCode nvarchar(50),
    @BranchOrgName nvarchar(50),
    @OrgCode nvarchar(50),
    @OrgName nvarchar(50),
    @SalesCode nvarchar(50),
    @SalesName nvarchar(50),
    @CatalogCode nvarchar(50),
    @CatalogName nvarchar(50),
    @PageIndex int,                當(dāng)前要顯示的頁(yè)的頁(yè)索引，索引從1開(kāi)始，無(wú)記錄時(shí)為0。
    @PageSize int,                頁(yè)大小
創(chuàng)建者：Hollis Yao
創(chuàng)建日期：2006-08-11
備注：
============================================================
*/
Create PROCEDURE [dbo].[GetSalesTargetList]
@UserType int,
@OrgID nvarchar(500),
@TargetPeriodBegin nvarchar(50),
@TargetPeriodEnd nvarchar(50),
@BranchOrgCode nvarchar(50),
@BranchOrgName nvarchar(50),
@OrgCode nvarchar(50),
@OrgName nvarchar(50),
@SalesCode nvarchar(50),
@SalesName nvarchar(50),
@CatalogCode nvarchar(50),
@CatalogName nvarchar(50),
@PageIndex int,
@PageSize int
AS
declare @Condition nvarchar(2000)
set @Condition = ''
if (@UserType>1)
    set @Condition = @Condition + ' and A.OrgID in (' + @OrgID + ')'
if (len(@TargetPeriodBegin)>0)
    set @Condition = @Condition + ' and A.TargetPeriod >=''' + @TargetPeriodBegin + ''''
if (len(@TargetPeriodEnd)>0)
    set @Condition = @Condition + ' and A.TargetPeriod =''' + @TargetPeriodEnd + ''''
if (len(@BranchOrgCode)>0)
    set @Condition = @Condition + ' and F.OrgCode like ''%' + @BranchOrgCode + '%'''
if (len(@BranchOrgName)>0)
    set @Condition = @Condition + ' and F.OrgName like ''%' + @BranchOrgName + '%'''
if (len(@OrgCode)>0)
    set @Condition = @Condition + ' and E.OrgCode like ''%' + @OrgCode + '%'''
if (len(@OrgName)>0)
    set @Condition = @Condition + ' and E.OrgName like ''%' + @OrgName + '%'''
if (len(@SalesCode)>0)
    set @Condition = @Condition + ' and C.SalesCode like ''%' + @SalesCode + '%'''
if (len(@SalesName)>0)
    set @Condition = @Condition + ' and C.SalesName like ''%' + @SalesName + '%'''
if (len(@CatalogCode)>0)
    set @Condition = @Condition + ' and D.CatalogCode like ''%' + @CatalogCode + '%'''
if (len(@CatalogName)>0)
    set @Condition = @Condition + ' and D.CatalogName like ''%' + @CatalogName + '%'''
if (len(@Condition)>0)
    set @Condition = substring(@Condition,5,len(@Condition))
--print @Condition
exec sp_Paging
    N'',N''' as CheckBox, A.TargetID, A.TargetPeriod, Convert(varchar(10), B.BeginDate, 120) as BeginDate, Convert(varchar(10), B.EndDate, 120) as EndDate,
        C.SalesCode, C.SalesName, D.CatalogCode, D.CatalogName, E.OrgID, E.OrgName, F.OrgID as BranchOrgID, F.OrgCode as BranchOrgCode, F.OrgName as BranchOrgName, A.Amount, '' as DetailButton',
    N'ChlSalesTarget as A
    left outer join ChlSalesTargetPeriod as B on A.TargetPeriod=B.TargetPeriod
    left outer join ChlSales as C on A.Sales=C.SalesCode
    left outer join ChlItemCatalog as D on A.ItemCatalog=D.CatalogCode
    left outer join ChlOrg as E on A.OrgID=E.OrgID
    left outer join ChlOrg as F on C.BranchOrgID=F.OrgID',
    @Condition,
    N'A.TargetPeriod desc,C.SalesName,D.CatalogName',
    @PageIndex, @PageSize

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