Comparing tsearch2 vectors.

From: Rajesh Kumar Mallah <mallah(at)trade-india(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Comparing tsearch2 vectors.
Date: 2004-07-12 08:46:06
Message-ID: 40F24FCE.3020103@trade-india.com
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Hi,

We want to compare strings after stemming. Can anyone
tell me what is the best method. I was thinking to compare
the tsvector ,but there is no operator for that.

Regds
Mallah.

tradein_clients=# SELECT to_tsvector('handicraft exporters');
+---------------------------+
| to_tsvector |
+---------------------------+
| 'export':2 'handicraft':1 |
+---------------------------+
(1 row)

Time: 710.315 ms
tradein_clients=#
tradein_clients=# SELECT to_tsvector('handicrafts exporter');
+---------------------------+
| to_tsvector |
+---------------------------+
| 'export':2 'handicraft':1 |
+---------------------------+
(1 row)

Time: 400.679 ms
tradein_clients=# SELECT to_tsvector('Hi there') = to_tsvector('Hi there');
ERROR: operator does not exist: tsvector = tsvector
HINT: No operator matches the given name and argument type(s). You may
need to add explicit type casts.
tradein_clients=#

--

regds
Mallah.

Rajesh Kumar Mallah
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