Re: [SQL] [SQL, regex, words] how to match word boundaries using regex's?
От | Tony.Curtis@vcpc.univie.ac.at |
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Тема | Re: [SQL] [SQL, regex, words] how to match word boundaries using regex's? |
Дата | |
Msg-id | 199810191459.QAA05951@haze.vcpc.univie.ac.at обсуждение исходный текст |
Ответ на | Re: [SQL] [SQL, regex, words] how to match word boundaries using regex's? ("Gene Selkov Jr." <selkovjr@mcs.anl.gov>) |
Список | pgsql-sql |
Re: [SQL] [SQL, regex, words] how to match word boundaries using regex's? , Gene <selkovjr@mcs.anl.gov> said: Gene> I guess there are no backslash macros is POSIX Gene> expressions. No joy. By the way, I am wondering what No joy, Ren :-( Gene> determined the choice of the regexp machine for Gene> postgres? Is it performance-related? Is it possible to Gene> have the same stuff as in perl? That would be really nice. I was just considering how easy it would be to pull out the current regex backend directory and put perl-type (or GNU) ones there instead. Or is that not the way to do it? Could I write a new backend with overloaded/new operators to do this? Gene> Split the text into words before loading into a Gene> special index table. Words are numbered sequentially, Gene> so you can search for "phrases": I had thought about doing this because the description string will probably require interpretation at some level. But I was looking for a straight-forward inefficiency-be-damned-it's-only-a-demo-for-now solution. tony
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