存储过程分页（3）

来自：http://www.cnblogs.com/nzperfect/archive/2007/05/08/738999.html

单主键：

CREATE PROC P_viewPage

    /**//*
        nzperfect [no_mIss] 高效通用分页存储过程(双向检索) 2007.5.7  QQ:34813284
        敬告：适用于单一主键或存在唯一值列的表或视图
        ps:Sql语句为8000字节,调用时请注意传入参数及sql总长度不要超过指定范围
           
    */

    @TableName VARCHAR(200),     --表名
    @FieldList VARCHAR(2000),    --显示列名，如果是全部字段则为*
    @PrimaryKey VARCHAR(100),    --单一主键或唯一值键
    @Where VARCHAR(2000),        --查询条件 不含'where'字符，如id>10 and len(userid)>9
    @Order VARCHAR(1000),        --排序 不含'order by'字符，如id asc,userid desc，必须指定asc或desc                                 
                                 --注意当@SortType=3时生效，记住一定要在最后加上主键，否则会让你比较郁闷
    @SortType INT,               --排序规则 1:正序asc 2:倒序desc 3:多列排序方法
    @RecorderCount INT,          --记录总数 0:会返回总记录
    @PageSize INT,               --每页输出的记录数
    @PageIndex INT,              --当前页数
    @TotalCount INT OUTPUT,      --记返回总记录
    @TotalPageCount INT OUTPUT   --返回总页数
AS
    SET NOCOUNT ON

    IF ISNULL(@TotalCount,'') = '' SET @TotalCount = 0
    SET @Order = RTRIM(LTRIM(@Order))
    SET @PrimaryKey = RTRIM(LTRIM(@PrimaryKey))
    SET @FieldList = REPLACE(RTRIM(LTRIM(@FieldList)),' ','')

    WHILE CHARINDEX(', ',@Order) > 0 OR CHARINDEX(' ,',@Order) > 0
    BEGIN
        SET @Order = REPLACE(@Order,', ',',')
        SET @Order = REPLACE(@Order,' ,',',')    
    END

    IF ISNULL(@TableName,'') = '' OR ISNULL(@FieldList,'') = '' 
        OR ISNULL(@PrimaryKey,'') = ''
        OR @SortType < 1 OR @SortType >3
        OR @RecorderCount  < 0 OR @PageSize < 0 OR @PageIndex < 0        
    BEGIN 
        PRINT('ERR_00')       
        RETURN
    END    

    IF @SortType = 3
    BEGIN
        IF (UPPER(RIGHT(@Order,4))!=' ASC' AND UPPER(RIGHT(@Order,5))!=' DESC')
        BEGIN PRINT('ERR_02') RETURN END
    END

    DECLARE @new_where1 VARCHAR(1000)
    DECLARE @new_where2 VARCHAR(1000)
    DECLARE @new_order1 VARCHAR(1000)   
    DECLARE @new_order2 VARCHAR(1000)
    DECLARE @new_order3 VARCHAR(1000)
    DECLARE @Sql VARCHAR(8000)
    DECLARE @SqlCount NVARCHAR(4000)

    IF ISNULL(@where,'') = ''
        BEGIN
            SET @new_where1 = ' '
            SET @new_where2 = ' WHERE  '
        END
    ELSE
        BEGIN
            SET @new_where1 = ' WHERE ' + @where 
            SET @new_where2 = ' WHERE ' + @where + ' AND '
        END

    IF ISNULL(@order,'') = '' OR @SortType = 1  OR @SortType = 2 
        BEGIN
            IF @SortType = 1 
            BEGIN 
                SET @new_order1 = ' ORDER BY ' + @PrimaryKey + ' ASC'
                SET @new_order2 = ' ORDER BY ' + @PrimaryKey + ' DESC'
            END
            IF @SortType = 2 
            BEGIN 
                SET @new_order1 = ' ORDER BY ' + @PrimaryKey + ' DESC'
                SET @new_order2 = ' ORDER BY ' + @PrimaryKey + ' ASC'
            END
        END
    ELSE
        BEGIN
            SET @new_order1 = ' ORDER BY ' + @Order
        END

    IF @SortType = 3 AND  CHARINDEX(','+@PrimaryKey+' ',','+@Order)>0
        BEGIN
            SET @new_order1 = ' ORDER BY ' + @Order
            SET @new_order2 = @Order + ','            
            SET @new_order2 = REPLACE(REPLACE(@new_order2,'ASC,','{ASC},'),'DESC,','{DESC},')            
            SET @new_order2 = REPLACE(REPLACE(@new_order2,'{ASC},','DESC,'),'{DESC},','ASC,')
            SET @new_order2 = ' ORDER BY ' + SUBSTRING(@new_order2,1,LEN(@new_order2)-1)            
            IF @FieldList <> '*'
                BEGIN            
                    SET @new_order3 = REPLACE(REPLACE(@Order + ',','ASC,',','),'DESC,',',')                              
                    SET @FieldList = ',' + @FieldList                    
                    WHILE CHARINDEX(',',@new_order3)>0
                    BEGIN
                        IF CHARINDEX(SUBSTRING(','+@new_order3,1,CHARINDEX(',',@new_order3)),','+@FieldList+',')>0
                        BEGIN 
                        SET @FieldList = 
                            @FieldList + ',' + SUBSTRING(@new_order3,1,CHARINDEX(',',@new_order3))                        
                        END
                        SET @new_order3 = 
                        SUBSTRING(@new_order3,CHARINDEX(',',@new_order3)+1,LEN(@new_order3))
                    END
                    SET @FieldList = SUBSTRING(@FieldList,2,LEN(@FieldList))                     
                END            
        END

    SET @SqlCount = 'SELECT @TotalCount=COUNT(*),@TotalPageCount=CEILING((COUNT(*)+0.0)/'
                    + CAST(@PageSize AS VARCHAR)+') FROM ' + @TableName + @new_where1
    
    IF @RecorderCount  = 0
        BEGIN
             EXEC SP_EXECUTESQL @SqlCount,N'@TotalCount INT OUTPUT,@TotalPageCount INT OUTPUT',
                               @TotalCount OUTPUT,@TotalPageCount OUTPUT
        END
    ELSE
        BEGIN
             SELECT @TotalCount = @RecorderCount            
        END

    IF @PageIndex > CEILING((@TotalCount+0.0)/@PageSize)
        BEGIN
            SET @PageIndex =  CEILING((@TotalCount+0.0)/@PageSize)
        END

    IF @PageIndex = 1 OR @PageIndex >= CEILING((@TotalCount+0.0)/@PageSize)
        BEGIN
            IF @PageIndex = 1 --返回第一页数据
                BEGIN
                    SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ' 
                               + @TableName + @new_where1 + @new_order1
                END
            IF @PageIndex >= CEILING((@TotalCount+0.0)/@PageSize)  --返回最后一页数据
                BEGIN
                    SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM (' 
                               + 'SELECT TOP ' + STR(ABS(@PageSize*@PageIndex-@TotalCount-@PageSize)) 
                               + ' ' + @FieldList + ' FROM '
                               + @TableName + @new_where1 + @new_order2 + ' ) AS TMP '
                               + @new_order1                    
                END        
        END    
    ELSE
        BEGIN
            IF @SortType = 1  --仅主键正序排序
                BEGIN
                    IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2  --正向检索
                        BEGIN
                            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ' 
                                       + @TableName + @new_where2 + @PrimaryKey + ' > '
                                       + '(SELECT MAX(' + @PrimaryKey + ') FROM (SELECT TOP '
                                       + STR(@PageSize*(@PageIndex-1)) + ' ' + @PrimaryKey 
                                       + ' FROM ' + @TableName
                                       + @new_where1 + @new_order1 +' ) AS TMP) '+ @new_order1
                        END
                    ELSE  --反向检索
                        BEGIN
                            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM (' 
                                       + 'SELECT TOP ' + STR(@PageSize) + ' ' 
                                       + @FieldList + ' FROM '
                                       + @TableName + @new_where2 + @PrimaryKey + ' < '
                                       + '(SELECT MIN(' + @PrimaryKey + ') FROM (SELECT TOP '
                                       + STR(@TotalCount-@PageSize*@PageIndex) + ' ' + @PrimaryKey 
                                       + ' FROM ' + @TableName
                                       + @new_where1 + @new_order2 +' ) AS TMP) '+ @new_order2 
                                       + ' ) AS TMP ' + @new_order1
                        END
                END
            IF @SortType = 2  --仅主键反序排序
                BEGIN
                    IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2  --正向检索
                        BEGIN
                            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ' 
                                       + @TableName + @new_where2 + @PrimaryKey + ' < '
                                       + '(SELECT MIN(' + @PrimaryKey + ') FROM (SELECT TOP '
                                       + STR(@PageSize*(@PageIndex-1)) + ' ' + @PrimaryKey 
                                       +' FROM '+ @TableName
                                       + @new_where1 + @new_order1 + ') AS TMP) '+ @new_order1                               
                        END 
                    ELSE  --反向检索
                        BEGIN
                            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM (' 
                                       + 'SELECT TOP ' + STR(@PageSize) + ' ' 
                                       + @FieldList + ' FROM '
                                       + @TableName + @new_where2 + @PrimaryKey + ' > '
                                       + '(SELECT MAX(' + @PrimaryKey + ') FROM (SELECT TOP '
                                       + STR(@TotalCount-@PageSize*@PageIndex) + ' ' + @PrimaryKey 
                                       + ' FROM ' + @TableName
                                       + @new_where1 + @new_order2 +' ) AS TMP) '+ @new_order2 
                                       + ' ) AS TMP ' + @new_order1
                        END  
                END                         
            IF @SortType = 3  --多列排序，必须包含主键，且放置最后，否则不处理
                BEGIN
                    IF CHARINDEX(',' + @PrimaryKey + ' ',',' + @Order) = 0 
                    BEGIN PRINT('ERR_02') RETURN END
                    IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2  --正向检索
                        BEGIN
                            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '
                                       + 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '
                                       + ' SELECT TOP ' + STR(@PageSize*@PageIndex) + ' ' + @FieldList
                                       + ' FROM ' + @TableName + @new_where1 + @new_order1 + ' ) AS TMP '
                                       + @new_order2 + ' ) AS TMP ' + @new_order1    
                        END
                    ELSE  --反向检索
                        BEGIN
                            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '  
                                       + 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '
                                       + ' SELECT TOP ' + STR(@TotalCount-@PageSize*@PageIndex+@PageSize) + ' ' + @FieldList
                                       + ' FROM ' + @TableName + @new_where1 + @new_order2 + ' ) AS TMP '
                                       + @new_order1 + ' ) AS TMP ' + @new_order1
                        END
                END
        END
    PRINT(@Sql)
    EXEC(@Sql)
GO

联合主键的：

CREATE PROC P_public_ViewPage
    /**//*
        no_mIss 通用分页存储过程 2007.3.1  QQ:34813284
        适用于联合主键/单主键/存在能确定唯一行列/存在能确定唯一行的多列 (用英文,隔开)
        调用：
            第一页查询时返回总记录和总页数及第一页记录：
            EXECUTE P_public_ViewPage_per 'TableName','col1,col2,col3,col4','pk1,pk2,pk3',
                'col5>0 and col7<9','pk1 asc,pk2 asc,pk3 asc',0,10,1,
                @TotalCount OUTPUT,@TotalPageCount OUTPUT
            其它页调用，比如第89页(假设第一页查询时返回总记录为2000000)：
            EXECUTE P_public_ViewPage_per 'TableName','col1,col2,col3,col4','pk1,pk2,pk3',
                'col5>0 and col7<9','pk1 asc,pk2 asc,pk3 asc',2000000,10,89,
                @TotalCount OUTPUT,@TotalPageCount OUTPUT
    */

    @TableName VARCHAR(200),     --表名
    @FieldList VARCHAR(2000),    --显示列名
    @PrimaryKey VARCHAR(100),    --单一主键或唯一值键或联合主键列表(用英文,隔开)或能确定唯一行的多列列表(用英文,隔开)
    @Where VARCHAR(1000),        --查询条件 不含'where'字符
    @Order VARCHAR(1000),        --排序 不含'order by'字符,用英文,隔开  
    @RecorderCount INT,          --记录总数 0:会返回总记录
    @PageSize INT,               --每页输出的记录数
    @PageIndex INT,              --当前页数
    @TotalCount INT OUTPUT,      --返回记录总数
    @TotalPageCount INT OUTPUT   --返回总页数
AS

    SET NOCOUNT ON
    
    SET @FieldList = REPLACE(@FieldList,' ','')
    IF @FieldList = '*' 
        BEGIN SET @FieldList = 'A.*'END
    ELSE
        BEGIN
            SET @FieldList = 'A.' + REPLACE(@FieldList,',',',A.')
        END
    
    WHILE CHARINDEX(', ',@Order)>0
    BEGIN
        SET @Order = REPLACE(@Order,', ',',')
    END

    IF ISNULL(@TableName,'') = '' OR ISNULL(@PrimaryKey,'') = ''        
        OR @RecorderCount < 0 OR @PageSize < 0 OR @PageIndex < 0
    BEGIN        
        RETURN
    END
 
    DECLARE @new_where1 VARCHAR(1000)
    DECLARE @new_where2 VARCHAR(1000)
    DECLARE @new_where3 VARCHAR(1000)
    DECLARE @new_where4 VARCHAR(1000)
    DECLARE @new_order1 VARCHAR(1000)
    DECLARE @new_order2 VARCHAR(1000)
    DECLARE @Fields VARCHAR(1000)
    DECLARE @Sql VARCHAR(8000)
    DECLARE @SqlCount NVARCHAR(4000)

    SET @Fields = @PrimaryKey + ','
    SET @new_where2 = ''
    SET @new_where4 = ''


    IF ISNULL(@where,'') = ''
        BEGIN
            SET @new_where1 = ' '
            SET @new_where3 = ' WHERE '
        END
    ELSE
        BEGIN            
            SET @new_where1 = ' WHERE ' + @where + ' '
            SET @new_where3 = ' WHERE 1=1 ' 
                    + REPLACE(' AND ' + @where,' AND ',' AND A.')+ ' AND '
        END
    
    WHILE CHARINDEX(',',@Fields)>0
    BEGIN
        SET @new_where2 = @new_where2 
            + 'A.' + LTRIM(LEFT(@Fields,CHARINDEX(',',@Fields)-1))
            + ' = B.' + LTRIM(LEFT(@Fields,CHARINDEX(',',@Fields)-1)) + ' AND '
        SET @new_where4 = @new_where4 
            + 'B.' + LTRIM(LEFT(@Fields,CHARINDEX(',',@Fields)-1)) + ' IS NULL AND '
        SET @Fields = SUBSTRING(@Fields,CHARINDEX(',',@Fields)+1,LEN(@Fields))
    END
    SET @new_where2 = LEFT(@new_where2,LEN(@new_where2)-4)
    SET @new_where4 = LEFT(@new_where4,LEN(@new_where4)-4)

    IF ISNULL(@order,'') = '' 
        BEGIN
            SET @new_order1 = ''
            SET @new_order2 = ''
        END
    ELSE
        BEGIN
            SET @new_order1 = ' ORDER BY ' + @Order
            SET @new_order2 = ' ORDER BY ' 
                    + RIGHT(REPLACE(',' + @Order,',',', A.' ),
                            LEN(REPLACE(',' + @Order,',',', A.' ))-1)
        END

    SET @SqlCount = 'SELECT @TotalCount=COUNT(*),@TotalPageCount=CEILING((COUNT(*)+0.0)/'
                    + CAST(@PageSize AS VARCHAR)+') FROM ' + @TableName 
                    + ' A ' +  @new_where1
    
    IF @RecorderCount = 0
        BEGIN
             EXEC SP_EXECUTESQL @SqlCount,N'@TotalCount INT OUTPUT,@TotalPageCount INT OUTPUT',
                               @TotalCount OUTPUT,@TotalPageCount OUTPUT
        END
    ELSE
        BEGIN
             SELECT @TotalCount = @RecorderCount            
        END

    IF @PageIndex > CEILING((@TotalCount+0.0)/@PageSize)
        BEGIN
            SET @PageIndex = CEILING((@TotalCount+0.0)/@PageSize)
        END
    IF @PageIndex = 1
        BEGIN
            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ' 
                       + @TableName + ' A'+ @new_where1 + @new_order1
        END
    ELSE
        BEGIN
            SET @Sql = 'SELECT TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ' 
                       + @TableName + ' A LEFT JOIN (SELECT TOP ' 
                       + STR(@PageSize*(@PageIndex-1)) 
                       + ' ' + @PrimaryKey + ' FROM ' + @TableName + @new_where1
                       + @new_order1 + ' )B ON ' + @new_where2 + @new_where3 
                       + @new_where4 + @new_order2
        END

EXEC(@Sql)
GO