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  • 创建存储过程(if 语句例句)

    SET ANSI_NULLS ON
    GO
    SET QUOTED_IDENTIFIER ON
    GO

    -- =============================================
    -- Author:   <Author,,Name>
    -- Create date: <Create Date,,>
    -- Description: <Description,,>
    -- =============================================
    ALTER PROCEDURE [dbo].[SP_NEWS_COUNT]
    -- Add the parameters for the stored procedure here
    @startdate datetime, --起始日期
    @enddate datetime,   --结束日期
    @id bigint    
    AS
    BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

        -- Insert statements for procedure here
    if @startdate =''
    select @startdate = min(view_date)
    from msg_view
    if @enddate =''
    set @enddate = getdate()
    if @id =''
    begin
    select m.msg_id,
        sum(m.view_count)as count,
        n.cate_code,
        n.n_title,
        n.n_infor_channel
    from msg_view m inner join news n
              on m.msg_id=n.news_id
    where (view_date between @startdate and @enddate)
    group by m.msg_id,n.cate_code,n.n_title,n.n_infor_channel
    order by count desc
    end
    if @id !=''
    begin
    select m.msg_id,
        sum(m.view_count)as count,
        n.cate_code,
        n.n_title,
        n.n_infor_channel
    from msg_view m inner join news n
              on m.msg_id=n.news_id
    where (view_date between @startdate and @enddate) and @id=msg_id
    group by m.msg_id,n.cate_code,n.n_title,n.n_infor_channel
    order by count desc
    end
    END
    GO

    SET ANSI_NULLS OFF
    GO
    SET QUOTED_IDENTIFIER OFF
    GO

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  • 原文地址:https://www.cnblogs.com/hutie1980/p/1403676.html
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