3需要子查询和联接帮助

Question

我试图排除在旅行表上没有条目的用户，但是如果用户不是过期用户（即修改日期不超过13个月），则将其包括在内

modifieddate字段位于用户表

上

我无法找到允许以下方式返回的方法

• 13个月以上的用户
• 用户不在任何旅行但用户已过期

但不返回

• 过去13个月的旅行用户
• 用户不在任何旅行但用户未过期

我在下面提供了我的代码。任何帮助赞赏

DECLARE @dt datetime, @months int

SET @dt = GETDATE()
SET @months = -13

select distinct app.* 
from appuser app
inner join  
(
    select user_id from appuser where user_id  not in    (
                                --Get app users that have been on any approved trips in the last x months
                                select distinct app.user_id
                                from  appuser app
                                join trip_user tu 
                                on tu.user_id = app.user_id
                                join trip t
                                on t.trip_id = tu.trip_id                               
                                where
                                trip_date between DATEADD(MONTH, -13, GETDATE()) and  Getdate()
                                    -- approved or completed trip
                                and trip_status_id in (2,3)
                                )                                   

    ) as PassNotOnTripInLast13Mons 
    on app.user_id = PassNotOnTripInLast13Mons.user_id
        left join
    (
        select distinct app.user_id from appuser app
            join trip_user tu 
            on tu.user_id = app.user_id
            join trip t
            on t.trip_id = tu.trip_id
            where
            trip_date > DATEADD(MONTH, -13, GETDATE())          
    ) as PassOnTripOver13Mons        
    on app.user_id = PassOnTripOver13Mons.user_id
    left join (
        select distinct user_id 
        from appuser  
        where DATEDIFF(MONTH, ModifiedDate ,  GETDATE()) > 13
        ) as PassOnSystemOver13Mons
    on app.user_id = PassOnSystemOver13Mons.user_id 
where 
--is a passanger        
isPassenger = 1 
--user does not have an unmet need
and app.user_id not in (select passenger_id from unmet_needs where passenger_id = app.user_id)
-- don't redo a passange alread obfusticated
and obfusticated = 0 
and isNTA = 0
and isTCUDispatcher = 0
and isProviderUser = 0
and isDriver = 0

Answer 1

以下是我对您的要求的最佳理解：您需要返回已经旅行过的用户，或者在过去的13个月内进行过修改的用户。您的代码中还有一个未记录的要求，仅包括未被诽谤的乘客，并且只计算已批准的旅行（trip_status_id in (2,3)）。

基于这些要求，我认为以下简化代码可以完成您要完成的任务：

select app.* 
from 
    appuser app
     left join 
    tripuser tu on 
        app.user_id = tu.user_id 
     left join 
     trip on 
        tu.trip_id = trip.trip_id 
        and trip_status_id in (2,3) -- approved trip
        and trip_date >= DATEADD(MONTH, -13, GETDATE())
WHERE 
      (
        trip.trip_id is null and
        app.ModifiedDate <= DATEADD(MONTH, -13, GETDATE())
      )
    --is a passenger        
    and isPassenger = 1 
    --user does not have an unmet need
    and app.user_id not in (select passenger_id from unmet_needs where passenger_id = app.user_id)
    -- don't redo a passange alread obfusticated
    and obfusticated = 0 
    and isNTA = 0
    and isTCUDispatcher = 0
    and isProviderUser = 0
    and isDriver = 0