• sql server分页存储过程


    利用表变量实现分页

    一、

    代码
    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)
    PRINT @SqlQuery
    SET NOCOUNT ON
    EXECUTE(@SqlQuery)
    SET NOCOUNT OFF

    RETURN @@RowCount
    END

     二

    代码
    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)
    PRINT @SqlQuery
    SET NOCOUNT ON
    EXECUTE(@SqlQuery)
    SET NOCOUNT OFF

    RETURN @@RowCount
    END

     三、

    从数据表中取出第n条到第m条的记录的方法

    从publish 表中取出第 n 条到第 m 条的记录:

    SELECT TOP m-n+1 *

    FROM publish

    WHERE (id NOT IN

        (SELECT TOP n-1 id

         FROM publish))

    id 为publish 表的关键字

     ------------------------

    分页方案:

    select top 页大小 *

    from table1

    where id>

    (select max (id) from

    (select top ((页码-1)*页大小) id from table1 order by id) as T

    )

    order by id

    全部的sql语句: 

    代码
    --获取指定页的数据:
    CREATE PROCEDURE pagination3
    @tblName varchar(255), -- 表名
    @strGetFields varchar(1000) = ''*'', -- 需要返回的列
    @fldName varchar(255)='''', -- 排序的字段名
    @PageSize int = 10, -- 页尺寸
    @PageIndex int = 1, -- 页码
    @doCount bit = 0, -- 返回记录总数, 非 0 值则返回
    @OrderType bit = 0, -- 设置排序类型, 非 0 值则降序
    @strWhere varchar(1500) = '''' -- 查询条件 (注意: 不要加 where)
    AS

    declare @strSQL varchar(5000) -- 主语句
    declare @strTmp varchar(110) -- 临时变量
    declare @strOrder varchar(400) -- 排序类型

    if @doCount != 0
    begin
    if @strWhere !=''''
    set @strSQL = "select count(*) as Total from [" + @tblName + "] where "+@strWhere
    else
    set @strSQL = "select count(*) as Total from [" + @tblName + "]"
    end
    --以上代码的意思是如果@doCount传递过来的不是0,就执行总数统计。以下的所有代码都是@doCount为0的情况:
    else
    begin
    if @OrderType != 0
    begin
    set @strTmp = "<(select min"
    set @strOrder = " order by [" + @fldName +"] desc"
    --如果@OrderType不是0,就执行降序,这句很重要!
    end
    else
    begin
    set @strTmp = ">(select max"
    set @strOrder = " order by [" + @fldName +"] asc"
    end

    if @PageIndex = 1
    begin
    if @strWhere != ''''

    set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ "
            
    from [" + @tblName + "] where " + @strWhere + " " + @strOrder
    else

    set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ "
            
    from ["+ @tblName + "] "+ @strOrder
    --如果是第一页就执行以上代码,这样会加快执行速度
    end
    else
    begin
    --以下代码赋予了@strSQL以真正执行的SQL代码
     
    set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " from ["
    + @tblName + "
    ] where [" + @fldName + "]" + @strTmp + "(["+ @fldName + "])
          
    from (select top " + str((@PageIndex-1)*@PageSize) + " ["+ @fldName + "]
          
    from [" + @tblName + "]" + @strOrder + ") as tblTmp)"+ @strOrder

    if @strWhere != ''''
    set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " from ["
    + @tblName + "
    ] where [" + @fldName + "]" + @strTmp + "(["
    + @fldName + "
    ]) from (select top " + str((@PageIndex-1)*@PageSize) + " ["
    + @fldName + "
    ] from [" + @tblName + "] where " + @strWhere + " "
    + @strOrder + ") as tblTmp) and " + @strWhere + " " + @strOrder
    end

    end

    exec (@strSQL)

    GO
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  • 原文地址:https://www.cnblogs.com/linzheng/p/1871034.html
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