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When tested to_tsvector on 'someword-123' with english full text config, I got the following result:

SELECT to_tsvector('someword-123');

"'-123':2 'someword':1"

However, I want to config to get the result like "'123':2 'someword':1" so when user search with 'someword & 123', it could return result.

Is there anyway to do this? Hope someone could help.

Update: For more information, my full text search is applied mostly for product name. For example, I have a product which name is "Intel Core i7-3820 Processor" and I want the result of to_tsvector() for this string could be like "'intel':1, 'core':2, 'i3':3, '3820':4, 'processor': 5" (currently, it's "'intel':1, 'core':2, 'i3':3, '-3820':4, 'processor': 5") so this product can be returned when user search with 'intel 3820'

Thank for your all.

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perhaps a better description of what you're trying to accomplish and why your data is formatted in such a way will get more attention and perhaps some answers. as it stands, i can't really understand the purpose behind your data or the pattern. –  swasheck Dec 18 '12 at 23:09
I suspect you'll have to modify the tsearch2 parser, which isn't a fun job. You want tsearch2 to treat mixed number-and-letter hyphenated words the same as normal hyphenated words. –  Craig Ringer Dec 19 '12 at 1:57
@swasheck Like Craig said, I want postgre full-text parser treat number-and-letter hyphenated words the same as normal hyphenated words. E.g., I have a product which name is "Intel Core i7-3820 Processor" and i want this product could be returned when user search 'intel 3820', i.e. its tsvector could be something like "'intel':1, 'core':2, 'i3':3, '3820':4, 'processor': 5". Thank you. –  VinhBS Dec 19 '12 at 7:17
This may be a breain-dead idea, but how about pre-processing product names so that spaces replace hyphens? (Say, you can put it in a separate column.) –  dezso Dec 19 '12 at 8:32
@dezso +1 for your solution. I didn't think of it that way. Thank you very much. –  VinhBS Dec 19 '12 at 11:26
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1 Answer

up vote 3 down vote accepted

I think it would be better to work around your problem: simply replace hyphens with spaces in the strings to be ts_vectored. If necessary, you can store the unhyphenated values in a separate column and run your searches against it.

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