sql存储过程分页

SET QUOTED_IDENTIFIER ON 
GO
SET ANSI_NULLS ON 
GO

ALTER  PROC P_viewPage
 
    /**//*
         nzperfect [no_mIss] 高效通用分页存储过程(双向检索) 2007.5.7  
         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
SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO


 

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