Count and Group By

  • Thread starter Thread starter supercooper
  • Start date Start date
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supercooper

I have data like so:

LSEID MTRS
------------------------------------------
AR-001 5-6N-27W-5
AR-001 5-6N-27W-5
AR-001 5-6N-27W-5
AR-002 5-6N-27W-5
AR-003 5-6N-27W-5
AR-003 5-6N-27W-5


and I need the count of LSEIDs in a unique MTRS, as in above
in 5-6N-27W-5, there are 3 unique LSEIDs

I have tried all combos of count, distinct, group by I can think of
until my eyes are bulging. I think this is really easy and I'm just
stumped. I'm thinking I may need to left join the count results to the
mtrs group results like so (??):

select mtrs from tbl group by mtrs as r1
left join (somehow get the count of each lseid for unique mtrs's) as
r2
on r1.mtrs on r2.mtrs

Any ideas??
 
supercooper said:
I have data like so:

LSEID MTRS
------------------------------------------
AR-001 5-6N-27W-5
AR-001 5-6N-27W-5
AR-001 5-6N-27W-5
AR-002 5-6N-27W-5
AR-003 5-6N-27W-5
AR-003 5-6N-27W-5


and I need the count of LSEIDs in a unique MTRS, as in above
in 5-6N-27W-5, there are 3 unique LSEIDs

I have tried all combos of count, distinct, group by I can think of
until my eyes are bulging. I think this is really easy and I'm just
stumped. I'm thinking I may need to left join the count results to the
mtrs group results like so (??):

select mtrs from tbl group by mtrs as r1
left join (somehow get the count of each lseid for unique mtrs's) as
r2
on r1.mtrs on r2.mtrs
Click to expand...


SELECT MTRS, Count(*) As mtrscount
FROM [SELECT DISTINCT MTRS, LSEID
FROM table]. As T
GROUP BY MTRS
 
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