Update row values between 2 dates before on the given date on the same account and with flag based on x number of days

  • I have 2 tables below. Table A contained the Spike value 2 different dates spike reading on the same AccountNum 2018-08-17 & 2018-08-21 . I need to take the Table A first Spike_Reading_Day 2018-08-17 and find the match on Table B Spike_Reading_Day 2018-08-17 and find all the dates till before the last Flag 'P' Readdate 2018-08-09 and calculate the number of days. Once I know there are 8 days between 2018-08-09 to 2018-08-17 and I need to take the Table A Spikeval 150 divide 8 days and get the calculated value apply on the 8 days. Example 150/ 8 days = 18.75 and apply it between 2018-08-09 to 2018-08-17 on each date

    Same apply to Table A second Spike_Reading_Day 2018-08-21 there are 3 days between 2018-08-19 to 2018-08-21 till the before the last Flag 'P'. So I need to take the SpikeVal 180 / 3 days = 60 and apply it on the 2018-08-19,2018-08-20,and 2018-08-21. I have tried different option nothing works because I have 2 dates on the same account_number.Any one can champion it? Thanks for your help

    Table A

    FID  AccountNum     Spike_Reading_Day   SpikeVal Flag
    34166 TT0034166     2018-08-17            150      P
    34166 TT0034166      2018-08-21           180      P

    Table B

    FID   AccountNum ReadDate  ReadVal Flag
    34166 TT0034166 2018-08-09 23.3620 P
    34166 TT0034166 2018-08-10 24.1021 A
    34166 TT0034166 2018-08-11 24.1021 A
    34166 TT0034166 2018-08-12 24.1021 A
    34166 TT0034166 2018-08-13 24.1021 A
    34166 TT0034166 2018-08-14 24.1021 A
    34166 TT0034166 2018-08-15 24.1021 A
    34166 TT0034166 2018-08-16 24.1021 A
    34166 TT0034166 2018-08-17 24.1021 A  <---
    34166 TT0034166 2018-08-18 18.7660 P
    34166 TT0034166 2018-08-19 24.5550 A 
    34166 TT0034166 2018-08-20 24.5550 A
    34166 TT0034166 2018-08-21 24.5550 A  <---

    My wanted Result
    FID   AccountNum ReadDate  ReadVal Flag
    34166 TT0034166 2018-08-09 23.3620 P
    34166 TT0034166 2018-08-10 18.75   A
    34166 TT0034166 2018-08-11 18.75   A
    34166 TT0034166 2018-08-12 18.75   A
    34166 TT0034166 2018-08-13 18.75   A
    34166 TT0034166 2018-08-14 18.75   A
    34166 TT0034166 2018-08-15 18.75   A
    34166 TT0034166 2018-08-16 18.75   A
    34166 TT0034166 2018-08-17 18.75   A  <---
    34166 TT0034166 2018-08-18 18.7660 P
    34166 TT0034166 2018-08-19  60    
    34166 TT0034166 2018-08-20  60     A
    34166 TT0034166 2018-08-21  60     A  <---

  • pcq0125 - Friday, August 24, 2018 11:24 AM

    I have 2 tables below. Table A contained the Spike value 2 different dates spike reading on the same AccountNum 2018-08-17 & 2018-08-21 . I need to take the Table A first Spike_Reading_Day 2018-08-17 and find the match on Table B Spike_Reading_Day 2018-08-17 and find all the dates till before the last Flag 'P' Readdate 2018-08-09 and calculate the number of days. Once I know there are 8 days between 2018-08-09 to 2018-08-17 and I need to take the Table A Spikeval 150 divide 8 days and get the calculated value apply on the 8 days. Example 150/ 8 days = 18.75 and apply it between 2018-08-09 to 2018-08-17 on each date

    Same apply to Table A second Spike_Reading_Day 2018-08-21 there are 3 days between 2018-08-19 to 2018-08-21 till the before the last Flag 'P'. So I need to take the SpikeVal 180 / 3 days = 60 and apply it on the 2018-08-19,2018-08-20,and 2018-08-21. I have tried different option nothing works because I have 2 dates on the same account_number.Any one can champion it? Thanks for your help

    Table A

    FID  AccountNum     Spike_Reading_Day   SpikeVal Flag
    34166 TT0034166     2018-08-17            150      P
    34166 TT0034166      2018-08-21           180      P

    Table B

    FID   AccountNum ReadDate  ReadVal Flag
    34166 TT0034166 2018-08-09 23.3620 P
    34166 TT0034166 2018-08-10 24.1021 A
    34166 TT0034166 2018-08-11 24.1021 A
    34166 TT0034166 2018-08-12 24.1021 A
    34166 TT0034166 2018-08-13 24.1021 A
    34166 TT0034166 2018-08-14 24.1021 A
    34166 TT0034166 2018-08-15 24.1021 A
    34166 TT0034166 2018-08-16 24.1021 A
    34166 TT0034166 2018-08-17 24.1021 A  <---
    34166 TT0034166 2018-08-18 18.7660 P
    34166 TT0034166 2018-08-19 24.5550 A 
    34166 TT0034166 2018-08-20 24.5550 A
    34166 TT0034166 2018-08-21 24.5550 A  <---

    My wanted Result
    FID   AccountNum ReadDate  ReadVal Flag
    34166 TT0034166 2018-08-09 23.3620 P
    34166 TT0034166 2018-08-10 18.75   A
    34166 TT0034166 2018-08-11 18.75   A
    34166 TT0034166 2018-08-12 18.75   A
    34166 TT0034166 2018-08-13 18.75   A
    34166 TT0034166 2018-08-14 18.75   A
    34166 TT0034166 2018-08-15 18.75   A
    34166 TT0034166 2018-08-16 18.75   A
    34166 TT0034166 2018-08-17 18.75   A  <---
    34166 TT0034166 2018-08-18 18.7660 P
    34166 TT0034166 2018-08-19  60    
    34166 TT0034166 2018-08-20  60     A
    34166 TT0034166 2018-08-21  60     A  <---

    You've been here long enough! Please provide your data in consumable format.

    If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.

  • Hi SSC Guru,
    Is this good enough? Thanks.

    FID    AccountNum  Spike_Reading_Day  SpikeVal  Flag
    34166  TT0034166    2018-08-17           150      P
    34166  TT0034166    2018-08-21           180      P

    Table B

    FID    AccountNum   ReadDate    ReadVal   Flag
    34166   TT0034166   2018-08-09   23.3620   P
    34166   TT0034166   2018-08-10   24.1021   A
    34166   TT0034166   2018-08-11   24.1021   A
    34166   TT0034166   2018-08-12   24.1021   A
    34166   TT0034166   2018-08-13   24.1021   A
    34166   TT0034166   2018-08-14   24.1021   A
    34166   TT0034166   2018-08-15   24.1021   A
    34166   TT0034166   2018-08-16   24.1021   A
    34166   TT0034166   2018-08-17   24.1021   A <---
    34166   TT0034166   2018-08-18   18.7660   P
    34166   TT0034166   2018-08-19   24.5550   A 
    34166   TT0034166    2018-08-20  24.5550   A
    34166   TT0034166    2018-08-21  24.5550   A <---

    My wanted Result in bold
    FID    AccountNum   ReadDate   ReadVal   Flag
    34166   TT0034166   2018-08-09   23.3620  P
    34166   TT0034166   2018-08-10   18.75    A
    34166   TT0034166   2018-08-11   18.75    A
    34166   TT0034166   2018-08-12   18.75    A
    34166   TT0034166   2018-08-13   18.75    A
    34166   TT0034166   2018-08-14   18.75    A
    34166   TT0034166   2018-08-15   18.75    A
    34166   TT0034166   2018-08-16   18.75    A
    34166   TT0034166   2018-08-17   18.75    A <---
    34166   TT0034166   2018-08-18   18.7660  P
    34166   TT0034166   2018-08-19   60       
    34166   TT0034166   2018-08-20   60       A
    34166   TT0034166   2018-08-21   60       A <---

  • Hi Phil,
    I changed the format in aligned to the header with spaces and  between fields. For somehow, SQLsevercentral trimmed the leading space on each row values.

  • pcq0125 - Friday, August 24, 2018 11:51 AM

    Hi Phil,
    I changed the format in aligned to the header with spaces and  between fields. For somehow, SQLsevercentral trimmed the leading space on each row values.

    Not really.

    Have a look at this post, which I created a while ago. Notice how I supply code which can be pasted into SSMS and executed by anyone else – they don't need access to my systems or data to do it. That is what I was suggesting.

    If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.


  • Declare @TableA as table
    (
    FID numeric(8,0),
    AccountNum char(9),
    Spike_Reading_Day date,
    SpikeVal int,
    Flag char(1)
    );
    Try this...

    Declare @TableB as table
    (
    FID numeric(8,0),
    AccountNum char(9),
    ReadDate date,
    ReadVal decimal(8,4),
    Flag char(1)
    );

    insert @TableA
    values
    ('34166','TT0034166','8/17/2018','150','P'),
    ('34166','TT0034166','8/21/2018','180','P');

    insert @TableB
    values
    ('34166','TT0034166','8/9/2018','23.362','P'),
    ('34166','TT0034166','8/10/2018','24.1021','A'),
    ('34166','TT0034166','8/11/2018','24.1021','A'),
    ('34166','TT0034166','8/12/2018','24.1021','A'),
    ('34166','TT0034166','8/13/2018','24.1021','A'),
    ('34166','TT0034166','8/14/2018','24.1021','A'),
    ('34166','TT0034166','8/15/2018','24.1021','A'),
    ('34166','TT0034166','8/16/2018','24.1021','A'),
    ('34166','TT0034166','8/17/2018','24.1021','A'),
    ('34166','TT0034166','8/18/2018','18.766','P'),
    ('34166','TT0034166','8/19/2018','24.555','A'),
    ('34166','TT0034166','8/20/2018','24.555','A'),
    ('34166','TT0034166','8/21/2018','24.555','A')
    ;

    with cte

    as
    (
    select a.FID, a.AccountNum, isnull(b.ReadDate , Spike_Reading_Day) ReadDate ,a.Spike_Reading_Day, a.SpikeVal
    from @TableA a
    outer apply
    (
    select top (1) b.ReadDate
    from @TableB b
    where
    b.FID = a.FID
    and b.AccountNum = a.AccountNum
    and b.ReadDate < a.Spike_Reading_Day
    and b.Flag = 'P'
    order by b.ReadDate desc

    ) b

    )

    select a.FID
    ,a.AccountNum
    ,A.ReadDate

    ,case when a.Flag = 'A' then
    SpikeVal/cast(count(a.Flag) over(partition by a.Fid, a.AccountNum, a.Flag , b.readDate order by a.FID) AS decimal(6,4))
    else a.ReadVal
    end [ReadVal]
    ,a.Flag

    from @TableB a
    left join cte b on a.FID = b.FID and a.AccountNum = b.AccountNum and a.ReadDate between b.ReadDate and b.Spike_Reading_Day

    order by a.ReadDate;

  • Hi femi,
    Thanks for your help. I ran your query but ran into error on the select statement query below  on the order by after the CTE. Any ideas?

    SpikeVal/cast(count(a.Flag) over(partition by a.Fid, a.AccountNum, a.Flag , b.readDate order by a.FID) AS decimal(6,4))

    Thanks,

  • if you are getting an error message, can you post it?

  • Hi femi,
    See the error below and I bold it .Thanks.

    Msg 102, Level 15, State 1, Line 73
    Incorrect syntax near 'order'.

    select a.FID
    ,a.AccountNum
    ,A.ReadDate

    ,case when a.Flag = 'A' then
    SpikeVal/cast(count(a.Flag) over(partition by a.Fid, a.AccountNum, a.Flag , b.readDate order by a.FID) AS decimal(6,4))
    else a.ReadVal end [ReadVal]
    ,a.Flag

    from @TableB a
    left join cte b on a.FID = b.FID and a.AccountNum = b.AccountNum and a.ReadDate between b.ReadDate and b.Spike_Reading_Day

    order by A.ReadDate;

  • Hmm..What happens when you remove the Order By clause within the Over clause?
    SpikeVal/cast(count(a.Flag) over(partition by a.Fid, a.AccountNum, a.Flag , b.readDate) AS decimal(6,4))

  • I removed the order by within the over clause and it worked. Thank you.very much. You are a champion.

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