Re: Work Around For Simple Oracle interMedia?
От | Philip Hallstrom |
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Тема | Re: Work Around For Simple Oracle interMedia? |
Дата | |
Msg-id | 20020212155218.Q92147-100000@teak.adhesivemedia.com обсуждение исходный текст |
Ответ на | Work Around For Simple Oracle interMedia? ("David Griffiths" <dgriffiths@boats.com>) |
Список | pgsql-general |
I'll be the first to say I'm not a text/search expert, but in src/contrib there's the following: fulltextindex - Full text indexing using triggers and there's this: http://openfts.sourceforge.net/ I haven't used either so can't comment at all... there's also htdig and mngosearch (external apps). -philip On Tue, 12 Feb 2002, David Griffiths wrote: > One of our two databases uses context indexes on a column. > > If your not familiar, this is part of the Oracle interMedia option. The idea > here is to be able to search for words within a text block. The text block > is in a row, in one of the columns. It can also be HTML, a Word document, > etc. When you index the column, it speeds up finding matching words. > > Once that's done, you can search like this: > > SELECT SCORE(1) title FROM news_items > WHERE CONTAINS(text, 'Bolivia', 1) > 0; > > This would find all rows in the table "news_item" that has the text > "Bolivia" in the "title" column. > > SELECT SCORE(1) title FROM news_items > WHERE CONTAINS(text, 'Bolivia OR Peru', 1) > 0; > > This would find all rows in the table "news_item" that has the text > "Bolivia" or "Peru" in the "title" column in any order. > > This is the most basic usage of the interMedia (you can get it to do a > soundex to match a sound, or get a "near" match or fuzzy match rather than > an exact match, etc.) > > But I'm looking for the basic "return all rows where the text in this column > returns this word or these words". > > My two thoughts are, write my own function in PERL, or store the text in a > file outside the database and use some OS-features to do the search > > Any suggestions? > > David > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 5: Have you checked our extensive FAQ? > > http://www.postgresql.org/users-lounge/docs/faq.html >
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