RE: Indexing varchar[]'s
От | Eric Ridge |
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Тема | RE: Indexing varchar[]'s |
Дата | |
Msg-id | D3ADE25911614840BC69C72E3171E4ED028066@tcdiexch.tcdi.com обсуждение исходный текст |
Ответ на | Indexing varchar[]'s ("Eric Ridge" <ebr@tcdi.com>) |
Список | pgsql-general |
> i'd bet that it's likely that something could be done with a > subsidiary relation -- instead of you're absolutely right, that would make the indexing work (with postgres). but using arrays is a design decision (good or bad). and it's a decision we make often (with another db product) when we have tables with millions of records. performance starts to suffer when you join one 8.3 million record table with another 1.5 million record table. Esp. when you have many fields that need to be "arrays". plus, as an aside, since postgres supports arrays it just kinda makes sense that you can be able to index 'em too. on the surface it doesn't sound too difficult to implement, but I don't understand the sources enough to do it... yet. what I really need is full text indexing. the contrib/fti package seems good, but the queries you have to generate are complicated. eric
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