Re: Attribute must be GROUPed.... ?
От | Daniele Orlandi |
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Тема | Re: Attribute must be GROUPed.... ? |
Дата | |
Msg-id | 3EB04811.3050902@orlandi.com обсуждение исходный текст |
Ответ на | Re: Attribute must be GROUPed.... ? (Stephan Szabo <sszabo@megazone23.bigpanda.com>) |
Ответы |
Re: Attribute must be GROUPed.... ?
Re: Attribute must be GROUPed.... ? |
Список | pgsql-hackers |
Stephan Szabo wrote: > > AFAIK it's a requirement of the SQL spec. (SQL92(draft) 7.9 SR 7, "each > <column reference> in each <value expression> that references a column > of T shall reference a grouping column or be specified within a <set > function specification>." I see... How should the "shall" term be considered ? I don't have much knowledge of the SQL specs language. How other DBMS behave in this case ? I know that mysql doesn't enforce this requirement but... mysql is not a perfect reference wrt standards compliance. > Well, it'd mean you didn't have to put the extra columns in the group by > list to make them grouping columns. This is what I currently do as a workaround, but it's not much clean expecially when you have many ungrouped fields in the target list. Bye! -- Daniele Orlandi Planet Srl
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