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POpostgresql + textsearch + german umlauts + UTF8
 

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  1. POpostgresql + textsearch + german umlauts + UTF8
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    <p>I'm really at my wits end, with this Problem, and I really hope someone could help me. I am using a Postgresql 9.3. My Database contains mostly german texts but not only, so it's encoded in utf-8. I want to establish a fulltextsearch wich supports german language, nothing special so far. But the search is behaving really strange,, and I can't find out what I am doing wrong.</p> <p>So, given the following table given as example</p> <pre><code>select * from test; a ------------- ein Baum viele Bäume Überleben Tisch Tische Café \d test Tabelle »public.test« Spalte | Typ | Attribute --------+------+----------- a | text | sintext=# \d Liste der Relationen Schema | Name | Typ | Eigentümer --------+---------------------+---------+------------ (...) public | test | Tabelle | paf </code></pre> <p>Now, lets have a look at some textsearch examples:</p> <pre><code>select * from test where to_tsvector('german', a) @@ plainto_tsquery('Baum'); a ------------- ein Baum viele Bäume select * from test where to_tsvector('german', a) @@ plainto_tsquery('Bäume'); --&gt; No Hits select * from test where to_tsvector('german', a) @@ plainto_tsquery('Überleben'); --&gt; No Hits select * from test where to_tsvector('german', a) @@ plainto_tsquery('Tisch'); a -------- Tisch Tische </code></pre> <p>Whereas Tische is Plural of Tisch (table) and Bäume is plural of Baum (tree). So, Obviously Umlauts does not work while textsearch perfoms well.</p> <p>But what really confuses me is, that a) non-german special characters are matching</p> <pre><code>select * from test where to_tsvector('german', a) @@ plainto_tsquery('Café'); a ------ Café </code></pre> <p>and b) if I don't use the german dictionary, there is no Problem with umlauts (but of course no real textsearch as well)</p> <pre><code>select * from test where to_tsvector(a) @@ plainto_tsquery('Bäume'); a ------------- viele Bäume </code></pre> <p>So, if <strong>I use the german dictionary for Text-Search, just the german special characters do not work?</strong> Seriously? What the hell is wrong here? I Really can't figure it out, please help!</p>
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    1. USPaflow
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    1. COAs SQLFiddle: http://sqlfiddle.com/#!15/3d571/4
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      1. POpostgresql + textsearch + german umlauts + UTF8
      1. USCraig Ringer
 

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