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Group by Month


Group by Month

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davidhyder
davidhyder
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I used to be the go-to-guy for SQL and SSRS in another life. But alas, I'm now manager who rarely gets to write queries or build reports. So the answer to this simple question escapes me and I can't seem to find a solution posted anywhere.

I want to group dates by month.

Here is my query:


select l.location_name Center, convert (date, a.appt_date) Date, count(a.appt_id) [Kept Appointments]
from appointments a
join location_mstr l on a.location_id = l.location_id
where a.appt_date between '20170101' and getdate()
group by l.location_name, a.appt_id, a.appt_date
order by center, date

This is an example of what I get:
Location Date Count
Los Angeles 1/1/2017 1
Los Angeles 1/1/2017 1
Los Angeles 1/1/2017 1
Los Angeles 1/2/2017 1
Los Angeles 1/2/2017 1
Los Angeles 1/2/2017 1
Los Angeles 1/3/2017 1
Los Angeles 1/3/2017 1
Los Angeles 1/3/2017 1
New York 1/1/2017 1
New York 1/1/2017 1
New York 1/1/2017 1
New York 1/2/2017 1
New York 1/2/2017 1
New York 1/2/2017 1
New York 1/3/2017 1
New York 1/3/2017 1
New York 1/3/2017 1
Chicago 1/1/2017 1
Chicago 1/1/2017 1
Chicago 1/1/2017 1
Chicago 1/2/2017 1
Chicago 1/2/2017 1
Chicago 1/2/2017 1
Chicago 1/3/2017 1
Chicago 1/3/2017 1
Chicago 1/3/2017 1

This is what I'm looking for: (drill down report)


Thanks!

mister.magoo
mister.magoo
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It's your Group By - it's too specific.

Firstly you are grouping by a.appt_id, so your Count will always be 1.
Secondly you are grouping by a.appt_date, but displaying convert (date, a.appt_date) - which suggests a.appt_date is a datetime and therefore your Group By on a.appt_date is grouping by time and date.

Try changing your GROUP BY to this:

group by l.location_name, convert (date, a.appt_date)

MM


select geometry::STGeomFromWKB(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  • davidhyder
    davidhyder
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    Thank you for your suggestion.

    I'd tried that, and it does in fact count for each day, but what I'm looking for is a count by month not day.
    Sue_H
    Sue_H
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    davidhyder - Monday, September 18, 2017 10:48 AM
    Thank you for your suggestion.

    I'd tried that, and it does in fact count for each day, but what I'm looking for is a count by month not day.


    It looks to me like you may need to do the grouping by DATENAME(month(convert (date, a.appt_date))), l.location_name

    Sue



    mister.magoo
    mister.magoo
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    davidhyder - Monday, September 18, 2017 10:48 AM
    Thank you for your suggestion.

    I'd tried that, and it does in fact count for each day, but what I'm looking for is a count by month not day.

    Oops, yeah I missed the month thing, so as suggested, use either month () or datename(month,...)


    MM


    select geometry::STGeomFromWKB(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  • davidhyder
    davidhyder
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    Thanks y'all... That got me there!

    Month() gave me the number of the month but Datename(m,...) gave me the name of the month so I went with that one.

    Greatly appreciated!!!
    sgmunson
    sgmunson
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    davidhyder - Monday, September 18, 2017 4:24 PM
    Thanks y'all... That got me there!

    Month() gave me the number of the month but Datename(m,...) gave me the name of the month so I went with that one.

    Greatly appreciated!!!

    Just keep in mind that you won't be able to have this report span years that way. Only a combination of month and year can do that.
    For example:
    GROUP BY CONVERT(char(4), YEAR(CONVERT(date, a.appt_date))) + '_' + DATENAME(MONTH(CONVERT(date, a.appt_date))), l.location_name



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    Lynn Pettis
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    I would convert all the dates to the first of each month and group on that value. No parsing and concatenating of values required.

    dateadd(month,datediff(month,0,Datecol),0)

    Cool
    Lynn Pettis

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