Re: Counting distinct names
От | Brett W. McCoy |
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Тема | Re: Counting distinct names |
Дата | |
Msg-id | Pine.LNX.4.10.10004172202030.6329-100000@chapelperilous.net обсуждение исходный текст |
Ответ на | Counting distinct names ("G. Anthony Reina" <reina@nsi.edu>) |
Список | pgsql-sql |
On Mon, 17 Apr 2000, G. Anthony Reina wrote: > Let's say I have a table: > > table1 > ===== > > subject_name text > subject_age int4 > test_trial int4 > test_score int4 > > > I'd like to find out how many times a unique 'subject_name' is in the > table. My SQL book says that I should be able to do this: > > select COUNT(DISTINCT subject_name) from table1; SELECT DISTINCT(subject_name), COUNT(subject_name) FROM table1 GROUP BY subject_name ; Brett W. McCoy http://www.chapelperilous.net --------------------------------------------------------------------------- Anything that is good and useful is made of chocolate.
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