SQL Server：在两个单独的行条目之间查找日期

Question

I am trying to pull a list of AccountNumbers that have 2 specific charges (by code) that are at least 2 days apart. These are the columns of my table:

• AccountNumber
• ServiceDate
• Code

Example: if there is AccountNumber for Code = 33967 on ServiceDate 12/11/2018 and an AccountNumber for Code = 33968 on ServiceDate 12/15/2018 , the AccountNumber will be output to the results window because these two instances show up on DIFFERENT ServiceDate s and are at least 2 days apart.

Example 2: if there is an AccountNumber for Code = 33967 on ServiceDate 12/11/2018 and an AccountNumber for Code = 33968 on ServiceDate 12/11/2018, the AccountNumber will NOT be output to the results window because these two instances show up on the same ServiceDate .

Example 3: if there is an AccountNumber for Code = 33967 on ServiceDate 12/11/2018 and an AccountNumber for Code = 33968 on ServiceDate 12/12/2018 , the AccountNumber will NOT be output to the results window because there are no dates between the two ServiceDate 's. However if it were 12/11 and 12/13 it would be acceptable because there is a day in-between.

I am only concerned about Code 33967 and 33968, all other codes should not be considered. Right now, I am able to pull all Accounts with both these codes on file but cannot figure out how to go further. Any ideas?

My code is as follows:

SELECT AccountNumber, ServiceDate 
FROM dbo.table
WHERE Code = '33968'

INTERSECT

SELECT AccountNumber, ServiceDate 
FROM dbo.table
WHERE Code = '33967'

Answer 1

here you go with some sample data. Feel free to add some more rows and test it up

      create table #Temp_table
    (
    AccountNumber int null
    , ServiceDate date null
    ,Code int null
    )
    insert into #Temp_table values
    (1,'12/11/2018',33967)
    ,(2,'12/15/2018',33968)
    ,(3,'12/11/2018',33967)
    ,(4,'12/12/2018',33968)
,(5,'12/17/2018',33968)
,(6,'12/16/2018',33967)


    ;with CTE_MinDate as (
    select --Code ,
    MinServiceDate = min(Servicedate)
    from #Temp_table 
    --group by Code
    )
    --select * from CTE_MinDate

    select *
    from (
    select *
    ,Days_Diff = datediff(day,MinServiceDate, Servicedate)
    from (
    select a.*
    ,MinServiceDate = (select MinServiceDate from CTE_MinDate)
    from #Temp_table a
    where a.Code in ( 33967,33968)
    ) a
    ) b where Days_Diff >= 2

Answer 2

Does this do what you want?

SELECT DISTINCT t.AccountNumber
FROM dbo.table t
WHERE t.Code = '33968' AND
      EXISTS (SELECT 1
              FROM dbo.table t2
              WHERE t2.AccountNumber = t.AccountNumber AND
                    t2.Code = '33967' AND
                    t2.ServiceDate <> t.ServiceDate
             );

Answer 3

If it's only the Account Number you want then how about:

SELECT AccountNumber
FROM dbo.[Table]
GROUP BY AccountNumber
HAVING COUNT(CASE CODE WHEN 33968 THEN 1 END) > 0
   AND COUNT(CASE CODE WHEN 33967 THEN 1 END) > 0;