From: | "Thomas H(dot)" <me(at)alternize(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: BUG #3767: tsearch2 index creation fatal crash |
Date: | 2007-11-21 04:42:36 |
Message-ID: | 4743B73C.4080606@alternize.com |
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Lists: | pgsql-bugs pgsql-docs |
>> there are more problems with tsvectors. this also fails:
>
>> SELECT ' just a test: 123 '::tsvector;
>> ERROR: syntax error in tsvector: " just a test: 123 "
>
> That's not a bug; your input isn't valid tsvector syntax.
>
ok. after re-reading page
http://www.postgresql.org/docs/8.3/static/textsearch-intro.html#TEXTSEARCH-SEARCHES
i saw my mistake. i misinterpreted the examples to show the possibility
to convert *any* text by using casting to tsvector as an alternative to
using to_tsvector :)
to new tsearch-users, it might not be obvious clear that you can't just
cast any text but should use to_tsvector. the example string 'a fat cat
sat on a mat and ate a fat rat' looks like an normal "random" text
string, especially when a tsvector in psql looks like
'ate':9 'cat':3 'fat':2,11 'mat':7 'rat':12 'sat':4
and doesn't contain stopwords like "a" and "and", which are included in
the casted string...
maybe an additional example that shows the usage of to_tsvector for any
input string would help...
thanks, thomas
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