Re: Boolean operators without commutators vs. ALL/ANY
| От | Tom Lane |
|---|---|
| Тема | Re: Boolean operators without commutators vs. ALL/ANY |
| Дата | |
| Msg-id | 6357.1308248058@sss.pgh.pa.us обсуждение |
| Ответ на | Re: Boolean operators without commutators vs. ALL/ANY (Robert Haas <robertmhaas@gmail.com>) |
| Список | pgsql-hackers |
Robert Haas <robertmhaas@gmail.com> writes:
> I'm having trouble avoiding the conclusion that we're trying to shove
> a round peg into a square hole. The idea that we have to have a
> commutator for every operator just because we don't handle left and
> right symmetrically sits poorly with me. I can't really argue with
> your statement that it's the easiest way to address Florian's gripe,
> but because it almost surely is. But it still feels like a kludge.
> The syntax foo = ANY(bar) is really quite a poorly-designed syntax,
> because the top-level operation is really "ANY", and it has three
> arguments: foo, =, bar. If the SQL committee had standardized on
> ANY(foo = $0, bar) or some such thing we wouldn't be having this
> conversation.
[ shrug... ] Take it up with the committee. The syntax is what it is,
and we should select our operators to fit it, not vice versa.
regards, tom lane
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