MS SQL - counts grouped by month - sql-server

Question

I have a table [tblCalls] containing a date and a telephone number.[logdate] & [telephone]
I'm trying to produce an output similar to the following:
Date Mobiles Landlines
Nov 2016 28 47
Dec 2016 65 98
Jan 2017 11 17
... and so on
Using the following:
SELECT MONTH(logdate) as myDate,
SUM(CASE WHEN telephone LIKE '07%' THEN 1 ELSE 0 END) mobiles,
sum(CASE WHEN telephone NOT LIKE '07%' THEN 1 ELSE 0 END) landlines
FROM tblCalls
WHERE username='myusername' AND YEAR(logdate)='2016'
GROUP BY MONTH(logdate)
I can produce this:
myDate Mobiles Landlines
1 28 47
2 65 98
3 11 17
4 09 14
5 32 8
... and so on
My question is in 2 parts.
1. How do I combine the month and year together and span years (not just 2016).
2. I have another table [tblUsersLogs] which also contains a date [logdate] and a username, I'd like include a count from this table on the number of entries for a specific user grouped by months in the year to produce something like this...
Date Mobiles Landlines UsernameCount
Nov 2016 28 47 50
Dec 2016 65 98 44
Jan 2017 11 17 45
... and so on
Is this possible?
UPDATE (some sample data)
[tblCalls]
logDate telephone
2017-01-04 12:18:36.243 01507443000
2017-01-04 11:23:17.313 07880507000
2017-01-04 11:23:16.760 01216286000
2017-01-04 11:23:15.837 07541360000
2017-01-04 11:23:15.570 01970611000
[tblUserLogs]
logDate username
2017-01-04 12:23:51.530 usera
2017-01-04 12:23:38.350 usera
2017-01-04 12:23:08.530 userb
2017-01-04 12:22:45.020 userc
2017-01-04 12:22:35.437 usera
Hope that helps

Answer 1

Not clear on UserNameCount so I made an assumption and removed the WHERE
Select Date = Format(myDate,'MMM yyyy')
,mobiles = sum(CASE WHEN telephone LIKE '07%' THEN 1 ELSE 0 END)
,landlines = sum(CASE WHEN telephone NOT LIKE '07%' THEN 1 ELSE 0 END)
,UserNamesCount = count(Distinct Usernames)
From tblCalls
Where Year(logdate)=2016
Group By Format(myDate,'MMM yyyy')
Order By Month(myDate)

Answer 2

All you need to do is to change your dates all to the same day of the month and then leave the formatting to your presentation/reporting layer:
SELECT dateadd(m,datediff(m,0,logdate),0) as myDate -- This will return the first day of the month.
,SUM(CASE WHEN telephone LIKE '07%' THEN 1 ELSE 0 END) mobiles
,SUM(CASE WHEN telephone NOT LIKE '07%' THEN 1 ELSE 0 END) landlines
FROM tblCalls
WHERE username = 'myusername' -- Avoid using functions in your WHERE criteria.
AND logdate >= '20160101' -- Doing so makes your filtering much less efficient.
AND logdate < '20170101' -- For more info, google 'SARGability'.
GROUP BY dateadd(m,datediff(m,0,logdate),0)
If you absolutely have to format within your SQL query, you can use:
left(datename(month,logdate),3) + ' ' + cast(year(logdate) as nvarchar(4))