Re: SQL query question
| От | Markus Schulz |
|---|---|
| Тема | Re: SQL query question |
| Дата | |
| Msg-id | 200502031248.36407.msc@tastatur-junkie.de обсуждение исходный текст |
| Ответ на | SQL query question ("Uwe C. Schroeder" <uwe@oss4u.com>) |
| Список | pgsql-general |
Am Donnerstag, 3. Februar 2005 08:32 schrieb Uwe C. Schroeder: > Maybe it's to late for me to think correctly (actually I'm sure of > that). I'm going to ask anyways. > I have a table like > > id int4 > user_id int4 > photo varchar > image_type char(1) > > where image_type is either G or X > What I want to do is have ONE query that gives me the count of images > of each type per user_id. > So if user 3 has 5 photos of type G and 3 photos of type X > I basically want to have a result 5,3 > It got to be possible to get a query like that, but somehow it eludes > me tonight. > > Any pointers are greatly appreciated. > > UC select user_id,image_type, count(id) from <table> group by user_id,image_type should do it. -- Markus Schulz
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