Re: writing a MIN(RECORD) aggregate
От | Gregory Stark |
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Тема | Re: writing a MIN(RECORD) aggregate |
Дата | |
Msg-id | 873aqemh49.fsf@oxford.xeocode.com обсуждение исходный текст |
Ответ на | Re: writing a MIN(RECORD) aggregate (Sam Mason <sam@samason.me.uk>) |
Ответы |
Re: writing a MIN(RECORD) aggregate
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Список | pgsql-hackers |
"Sam Mason" <sam@samason.me.uk> writes: > The reason for the sub-select is only because SQL doesn't provide any > other way to name expressions. Hum, or at least this should work... > There doesn't seem to be any nice way of getting fields out of a record! > > If I really want to do this, it's going to turn into quite an overhaul > of record handling in PG. It would also remove the nice syntactic trick > that a.b identifies the field "b" from table "a", and s.a.b means that > the above is in schema "s". Yeah, to disambiguate it you have to use (r).i -- Gregory Stark EnterpriseDB http://www.enterprisedb.com Ask me about EnterpriseDB's On-Demand Production Tuning
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