need to group values

  • my table stucture like

    date HourType hours HourValue status

    day1 m 1 1 y

    day1 m 2 1 y

    day1 m 3 1 y

    day1 a 4 0 n

    day1 a 5 0 n

    day1 a 6 0 n

    day2 m 1 1 y

    day2 m 2 1 y

    day2 m 3 1 y

    day2 a 4 0 y

    day2 a 5 1 y

    day2 a 6 1 y

    my day1 afternoon all hours 0, and day2 4th hour only 0,

    i need to status column that must be 'N' when all afternoon hours or morning hours is 0, if only one hour 0 means that must 'Y',

    how do set a status column like above.... can anyone help...

  • Can you write out the desired results, based on your sample data?

    If you could provide your input data in consumable (ie, runnable in SSMS) format, you will be more likely to get a working solution sooner. See the link in my signature for details of how to do that.

    The absence of evidence is not evidence of absence
    - Martin Rees
    The absence of consumable DDL, sample data and desired results is, however, evidence of the absence of my response
    - Phil Parkin

  • Perhaps this is what you mean.

    WITH SampleData (date, HourType, hours, HourValue, status) AS(

    SELECT 'day1','m',1,1,'y'

    UNION ALL SELECT 'day1','m',2,1,'y'

    UNION ALL SELECT 'day1','m',3,1,'y'

    UNION ALL SELECT 'day1','a',4,0,'n'

    UNION ALL SELECT 'day1','a',5,0,'n'

    UNION ALL SELECT 'day1','a',6,0,'n'

    UNION ALL SELECT 'day2','m',1,1,'y'

    UNION ALL SELECT 'day2','m',2,1,'y'

    UNION ALL SELECT 'day2','m',3,1,'y'

    UNION ALL SELECT 'day2','a',4,0,'y'

    UNION ALL SELECT 'day2','a',5,1,'y'

    UNION ALL SELECT 'day2','a',6,1,'y'

    )

    SELECT *

    ,CASE (

    SELECT MAX(HourValue)

    FROM SampleData b

    WHERE a.date = b.date AND a.HourType = b.HourType

    ) WHEN 1 THEN 'y' ELSE 'n' END

    FROM SampleData a;


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