Determining Continuous Eligibility between dates

  • Here is something for you to play with.

    create table #mytable(

    ID varchar(12),

    EffectiveDate datetime,

    TermDate datetime,

    [Status] varchar(1)

    );

    GO

    insert into #mytable values ('503484823','01/01/2012',Null,'A');

    insert into #mytable values ('592879472','01/01/2012',Null,'A');

    insert into #mytable values ('929921311','01/01/2012',Null,'A');

    insert into #mytable values ('239826234','01/01/2012',Null,'A');

    insert into #mytable values ('616546060','12/01/2011',Null,'A');

    insert into #mytable values ('978047548','12/01/2011',Null,'A');

    insert into #mytable values ('524739641','12/01/2011',Null,'A');

    insert into #mytable values ('428547606','12/01/2011','03/31/2012','A');

    insert into #mytable values ('428547606','04/01/2012',NULL,'A');-- Added record

    insert into #mytable values ('951720863','12/01/2011','03/31/2012','A');

    insert into #mytable values ('951720863','04/01/2012','04/30/2011','D');-- Added record

    insert into #mytable values ('951720863','05/01/2012',Null,'A');-- Added record

    insert into #mytable values ('131333186','12/01/2011',Null,'A');

    insert into #mytable values ('260895908','12/01/2011',Null,'A');

    insert into #mytable values ('553625622','12/01/2011',Null,'A');

    insert into #mytable values ('919168813','12/01/2011','01/31/2012','A');

    insert into #mytable values ('557902697','12/01/2011',Null,'A');

    insert into #mytable values ('379088668','12/01/2011','02/29/2012','A');

    insert into #mytable values ('602081252','12/01/2011',Null,'A');

    insert into #mytable values ('716393277','12/01/2011','01/31/2012','A');

    insert into #mytable values ('300006158','12/01/2011',Null,'A');

    insert into #mytable values ('157499166','01/01/2012','03/31/2012','A');

    insert into #mytable values ('249228354','01/01/2012',Null,'A');

    insert into #mytable values ('446726968','01/01/2012','04/30/2012','A');

    insert into #mytable values ('975883457','01/01/2012','03/31/2012','A');

    insert into #mytable values ('847326744','01/01/2012',Null,'A');

    insert into #mytable values ('434075176','01/01/2012','03/31/2012','A');

    insert into #mytable values ('296098224','01/01/2012','04/30/2012','A');

    insert into #mytable values ('370215156','12/01/2011',Null,'A');

    insert into #mytable values ('647742333','12/01/2011',Null,'A');

    insert into #mytable values ('528683544','12/01/2011','01/31/2012','A');

    insert into #mytable values ('717022168','12/01/2011',Null,'A');

    insert into #mytable values ('417045232','12/01/2011','02/29/2012','A');

    insert into #mytable values ('485375006','12/01/2011',Null,'A');

    insert into #mytable values ('963527175','12/01/2011','04/30/2012','A');

    insert into #mytable values ('328693654','12/01/2011',Null,'A');

    insert into #mytable values ('631187903','12/01/2011','02/29/2012','A');

    insert into #mytable values ('903184004','12/01/2011',Null,'A');

    insert into #mytable values ('833363486','12/01/2011',Null,'A');

    insert into #mytable values ('185935730','12/01/2011',Null,'A');

    insert into #mytable values ('479006496','12/01/2011','01/31/2012','A');

    insert into #mytable values ('302562202','12/01/2011',Null,'A');

    insert into #mytable values ('230389221','12/01/2011',Null,'A');

    insert into #mytable values ('187950850','12/01/2011','02/29/2012','A');

    insert into #mytable values ('543426566','12/01/2011',Null,'A');

    insert into #mytable values ('387473716','01/01/2012','04/30/2012','A');

    insert into #mytable values ('365407230','01/01/2012','04/30/2012','A');

    insert into #mytable values ('667394514','01/01/2012',Null,'A');

    insert into #mytable values ('572158672','01/01/2012',Null,'A');

    insert into #mytable values ('952548642','01/01/2012',Null,'A');

    insert into #mytable values ('803871629','01/01/2012',Null,'A');

    insert into #mytable values ('594658511','01/01/2012',Null,'A');

    insert into #mytable values ('430877573','01/01/2012',Null,'A');

    GO

    --SELECT *

    --FROM #mytable

    --WHERE EffectiveDate = '20111201'

    --ORDER BY ID,EffectiveDate;

    --GO

    WITH basedata AS (

    SELECT

    ID,

    MIN(EffectiveDate) EffectiveDate,

    MAX(ISNULL(TermDate,DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1))) AS TermDate,

    [Status]

    FROM

    #mytable

    GROUP BY

    ID,

    [Status]

    )

    SELECT

    bd1.ID

    FROM

    basedata bd1

    WHERE

    bd1.EffectiveDate = DATEADD(mm,DATEDIFF(mm,0,GETDATE()) - 6,0)

    AND bd1.TermDate = DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1)

    AND bd1.[Status] = 'A'

    AND NOT EXISTS (SELECT

    1

    FROM

    basedata bd2

    WHERE

    bd2.ID = bd1.ID

    AND bd2.[Status] = 'D'

    AND bd2.EffectiveDate between DATEADD(mm,DATEDIFF(mm,0,GETDATE()) - 6,0) AND

    DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1));

    GO

    DROP TABLE #mytable;

    GO

  • Thanks Lynn! This looks very close to the results that I need. I'll poke around with it.

  • Hi Lynn,

    I poked around with the code, and added a few records. The main one that is most important is the case where I marked it My New Added record. It's another line of dates, with a gap in December of 2011. The code will still pull the ID, even though it has a gap. Any ideas on how to work around this?

    create table #mytable(

    ID varchar(12),

    EffectiveDate datetime,

    TermDate datetime,

    [Status] varchar(1)

    );

    GO

    insert into #mytable values ('503484823','01/01/2011',Null,'A');

    insert into #mytable values ('592879472','01/01/2012',Null,'A');

    insert into #mytable values ('929921311','01/01/2012',Null,'A');

    insert into #mytable values ('239826234','01/01/2012',Null,'A');

    insert into #mytable values ('616546060','12/01/2011',Null,'A');

    insert into #mytable values ('978047548','12/01/2011',Null,'A');

    insert into #mytable values ('524739641','12/01/2011',Null,'A');

    insert into #mytable values ('428547606','12/01/2011','03/31/2012','A');

    insert into #mytable values ('428547606','04/01/2012',NULL,'A');-- Added record

    insert into #mytable values ('951720863','12/01/2011','03/31/2012','A');

    insert into #mytable values ('951720863','04/01/2012','04/30/2011','D');-- Added record

    insert into #mytable values ('951720863','05/01/2012',Null,'A');-- Added record

    insert into #mytable values ('131333186','12/01/2011',Null,'A');

    insert into #mytable values ('260895908','12/01/2011',Null,'A');

    insert into #mytable values ('553625622','12/01/2011',Null,'A');

    insert into #mytable values ('919168813','12/01/2011','01/31/2012','A');

    insert into #mytable values ('557902697','12/01/2011',Null,'A');

    insert into #mytable values ('379088668','12/01/2011','02/29/2012','A');

    insert into #mytable values ('602081252','12/01/2011',Null,'A');

    insert into #mytable values ('716393277','12/01/2011','01/31/2012','A');

    insert into #mytable values ('300006158','12/01/2011',Null,'A');

    insert into #mytable values ('157499166','01/01/2012','03/31/2012','A');

    insert into #mytable values ('249228354','01/01/2012',Null,'A');

    insert into #mytable values ('446726968','01/01/2012','04/30/2012','A');

    insert into #mytable values ('975883457','01/01/2012','03/31/2012','A');

    insert into #mytable values ('847326744','01/01/2012',Null,'A');

    insert into #mytable values ('434075176','01/01/2012','03/31/2012','A');

    insert into #mytable values ('296098224','01/01/2012','04/30/2012','A');

    insert into #mytable values ('370215156','12/01/2011',Null,'A');

    insert into #mytable values ('647742333','12/01/2011',Null,'A');

    insert into #mytable values ('528683544','12/01/2011','01/31/2012','A');

    insert into #mytable values ('717022168','12/01/2011',Null,'A');

    insert into #mytable values ('417045232','12/01/2011','02/29/2012','A');

    insert into #mytable values ('485375006','12/01/2011',Null,'A');

    insert into #mytable values ('963527175','12/01/2011','04/30/2012','A');

    insert into #mytable values ('328693654','12/01/2011',Null,'A');

    insert into #mytable values ('631187903','12/01/2011','02/29/2012','A');

    insert into #mytable values ('903184004','12/01/2011',Null,'A');

    insert into #mytable values ('833363486','12/01/2011',Null,'A');

    insert into #mytable values ('185935730','12/01/2011',Null,'A');

    insert into #mytable values ('479006496','12/01/2011','01/31/2012','A');

    insert into #mytable values ('302562202','12/01/2011',Null,'A');

    insert into #mytable values ('230389221','12/01/2011',Null,'A');

    insert into #mytable values ('187950850','12/01/2011','02/29/2012','A');

    insert into #mytable values ('543426566','12/01/2011',Null,'A');

    insert into #mytable values ('387473716','01/01/2012','04/30/2012','A');

    insert into #mytable values ('365407230','01/01/2012','04/30/2012','A');

    insert into #mytable values ('667394514','01/01/2012',Null,'A');

    insert into #mytable values ('572158672','01/01/2012',Null,'A');

    insert into #mytable values ('952548642','01/01/2012',Null,'A');

    insert into #mytable values ('803871629','01/01/2012',Null,'A');

    insert into #mytable values ('594658511','01/01/2012',Null,'A');

    insert into #mytable values ('594658511','01/01/2011','11/30/2011','A'); -- My New Added record

    insert into #mytable values ('430877573','01/01/2011','07/31/2012','A');

    GO

    --SELECT *

    --FROM #mytable

    --WHERE EffectiveDate = '20111201'

    --ORDER BY ID,EffectiveDate;

    --GO

    SELECT

    ID,

    MIN(EffectiveDate) EffectiveDate,

    MAX(ISNULL(TermDate,DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1))) AS TermDate,

    [Status]

    FROM

    #mytable

    GROUP BY

    ID,

    [Status]

    SELECT

    bd1.ID

    FROM

    (

    SELECT

    ID,

    MIN(EffectiveDate) EffectiveDate,

    MAX(ISNULL(TermDate,DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1))) AS TermDate,

    [Status]

    FROM

    #mytable

    GROUP BY

    ID,

    [Status]

    )bd1

    WHERE

    bd1.EffectiveDate <= Convert(datetime, cast(datepart(year, dateadd(yy, -1, getdate())) as CHAR(4)) + '12' +'01' )

    AND bd1.TermDate >= DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1)

    AND bd1.[Status] = 'A'

    AND NOT EXISTS (SELECT

    1

    FROM

    (

    SELECT

    ID,

    MIN(EffectiveDate) EffectiveDate,

    MAX(ISNULL(TermDate,DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1))) AS TermDate,

    [Status]

    FROM

    #mytable

    GROUP BY

    ID,

    [Status])bd2

    WHERE

    bd2.ID = bd1.ID

    AND bd2.[Status] = 'D'

    AND bd2.EffectiveDate between DATEADD(mm,DATEDIFF(mm,0,GETDATE()) - 6,0) AND

    DATEADD(mm,DATEDIFF(mm,0,GETDATE()) + 1,-1));

    GO

    DROP TABLE #mytable;

    GO

  • Nevermind 🙂 I worked it out by adding <= for the effective date, and it works perfectly now. Thanks Lynn!

  • Sounds good as I haven't had a chance to even look at it.

  • This was removed by the editor as SPAM

  • This was removed by the editor as SPAM

Viewing 7 posts - 16 through 21 (of 21 total)

You must be logged in to reply to this topic. Login to reply