Re: [GENERAL] Full Text Searches
От | Brett W. McCoy |
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Тема | Re: [GENERAL] Full Text Searches |
Дата | |
Msg-id | Pine.LNX.4.04.9905232220040.6721-100000@dragosani.lan2wan.com обсуждение исходный текст |
Ответ на | Full Text Searches (Andy Lewis <alewis@themecca.net>) |
Ответы |
Re: [GENERAL] Full Text Searches
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Список | pgsql-general |
On Sun, 23 May 1999, Andy Lewis wrote: > Whats the possibility of having full text searches added to text fields? > > That would be awesome..... Unfortunately, full text indexing is a different issue than the kind of indexing performed on table columns, and if you want to do any kind of efficient full text searching, you have to index the individual words in the text or it'd be so slow as to be hardly useful (especially if you're talking about 600,000 records with 2K of text in each text field). Excalibur, for instance, creates its own internal indexing for full text records, but uses an underlying SQL database for regular fielded data, and when you design your database, you have to make the distinction about what kind of indexing you want, stop words (words you don't want indexed, like 'the' and 'of'), and the way certain fields can or will be searched. Brett W. McCoy http://www.lan2wan.com/~bmccoy/ ----------------------------------------------------------------------- The six great gifts of an Irish girl are beauty, soft voice, sweet speech, wisdom, needlework, and chastity. -- Theodore Roosevelt, 1907
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