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浅述asp.net海量分页数据存储过程

  存储过程:

CREATE PROCEDURE [dbo].[GetRecordFromPage]
    @SelectList            VARCHAR(
2000),    --欲选择字段列表
    @TableSource        VARCHAR(
100),    --表名或视图表
    @SearchCondition    VARCHAR(
2000),    --查询条件
    @OrderExpression    VARCHAR(
1000),    --排序表达式
    @PageIndex            
INT = 1,        --页号,从0开始
    @PageSize            
INT = 10        --页尺寸
AS
BEGIN
    
IF @SelectList IS NULL OR LTRIM(RTRIM(@SelectList)) = ''
    BEGIN
        
SET @SelectList = '*'
    END
    PRINT @SelectList
    
    
SET @SearchCondition = ISNULL(@SearchCondition,'')
    SET @SearchCondition = LTRIM(RTRIM(@SearchCondition))
    
IF @SearchCondition <> ''
    BEGIN
        
IF UPPER(SUBSTRING(@SearchCondition,1,5)) <> 'WHERE'
        BEGIN
            
SET @SearchCondition = 'WHERE ' + @SearchCondition
        END
    
END
    PRINT @SearchCondition

    
SET @OrderExpression = ISNULL(@OrderExpression,'')
    SET @OrderExpression = LTRIM(RTRIM(@OrderExpression))
    
IF @OrderExpression <> ''
    BEGIN
        
IF UPPER(SUBSTRING(@OrderExpression,1,5)) <> 'WHERE'
        BEGIN
            
SET @OrderExpression = 'ORDER BY ' + @OrderExpression
        END
    
END
    PRINT @OrderExpression

    
IF @PageIndex IS NULL OR @PageIndex < 1
    BEGIN
        
SET @PageIndex = 1
    
END
    PRINT @PageIndex
    
IF @PageSize IS NULL OR @PageSize < 1
    BEGIN
        
SET @PageSize = 10
    
END
    PRINT  @PageSize

    DECLARE @SqlQuery VARCHAR(
4000)

    
SET @SqlQuery='SELECT '+@SelectList+',RowNumber
    FROM
        (
SELECT ' + @SelectList + ',ROW_NUMBER() OVER( '+ @OrderExpression +') AS RowNumber
          FROM '+@TableSource+' '+ @SearchCondition +') AS RowNumberTableSource
    WHERE RowNumber BETWEEN ' + CAST(((@PageIndex - 1)* @PageSize+1) AS VARCHAR)
    + ' AND ' +
    CAST((@PageIndex * @PageSize) AS VARCHAR)
--    ORDER BY ' + @OrderExpression
    PRINT @SqlQuery
    
SET NOCOUNT ON
    
EXECUTE(@SqlQuery)
    
SET NOCOUNT OFF

    RETURN @@RowCount
END
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