From: | PG Bug reporting form <noreply(at)postgresql(dot)org> |
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To: | pgsql-bugs(at)lists(dot)postgresql(dot)org |
Cc: | ngigi(at)at(dot)co(dot)ke |
Subject: | BUG #15172: Postgresql ts_headline with <-> operator does not highlight text properly |
Date: | 2018-04-25 00:02:20 |
Message-ID: | 152461454026.19805.6310947081647212894@wrigleys.postgresql.org |
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Lists: | pgsql-bugs |
The following bug has been logged on the website:
Bug reference: 15172
Logged by: Ngigi Waithaka
Email address: ngigi(at)at(dot)co(dot)ke
PostgreSQL version: 10.3
Operating system: Linux
Description:
I have a noticed a likely bug when using ts_headline with the <-> operator
Assuming the following query:
SELECT ts_headline('English','This Commercial Bank does not have any Equity
in Europe but European Commercial Bank does',
phraseto_tsquery('English','European Commercial
Bank')::tsquery);
The returned result is:
This <b>Commercial</b> <b>Bank</b> does not have any Equity in Europe but
<b>European</b> <b>Commercial</b> <b>Bank</b> does
This highlights the words Commercial & Bank separately in addition to
European Commercial Bank.
However, the correct output expected should be:
This Commercial Bank does not have any Equity in Europe but <b>European</b>
<b>Commercial</b> <b>Bank</b> does
Which only highlights *European Commercial Bank* due to the <-> operator in
phraseto_tsquery.
SELECT phraseto_tsquery('English','European Commercial Bank');
returns 'european' <-> 'commerci' <-> 'bank' as expected indicating the
problem is with ts_headline function.
Regards
NgigiW
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