存储过程分页(3)

符号 阅读:206 2022-02-09 13:16:23 评论:0

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

标签:数据库
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