diff options
Diffstat (limited to 'doc/src/sgml/test-parser.sgml')
| -rw-r--r-- | doc/src/sgml/test-parser.sgml | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/doc/src/sgml/test-parser.sgml b/doc/src/sgml/test-parser.sgml index 323a297a78d..367a95cce6e 100644 --- a/doc/src/sgml/test-parser.sgml +++ b/doc/src/sgml/test-parser.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/test-parser.sgml,v 1.1 2007/12/03 04:18:47 tgl Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/test-parser.sgml,v 1.2 2007/12/06 04:12:10 tgl Exp $ --> <sect1 id="test-parser"> <title>test_parser</title> @@ -8,15 +8,18 @@ </indexterm> <para> - This is an example of a custom parser for full text search. + <filename>test_parser</> is an example of a custom parser for full-text + search. It doesn't do anything especially useful, but can serve as + a starting point for developing your own parser. </para> <para> - It recognizes space-delimited words and returns just two token types: + <filename>test_parser</> recognizes words separated by white space, + and returns just two token types: <programlisting> mydb=# SELECT * FROM ts_token_type('testparser'); - tokid | alias | description + tokid | alias | description -------+-------+--------------- 3 | word | Word 12 | blank | Space symbols @@ -41,16 +44,16 @@ mydb=# SELECT * FROM ts_token_type('testparser'); <programlisting> mydb=# SELECT * FROM ts_parse('testparser', 'That''s my first own parser'); - tokid | token + tokid | token -------+-------- 3 | That's - 12 | + 12 | 3 | my - 12 | + 12 | 3 | first - 12 | + 12 | 3 | own - 12 | + 12 | 3 | parser </programlisting> </para> @@ -68,14 +71,14 @@ mydb-# ADD MAPPING FOR word WITH english_stem; ALTER TEXT SEARCH CONFIGURATION mydb=# SELECT to_tsvector('testcfg', 'That''s my first own parser'); - to_tsvector + to_tsvector ------------------------------- 'that':1 'first':3 'parser':5 (1 row) mydb=# SELECT ts_headline('testcfg', 'Supernovae stars are the brightest phenomena in galaxies', mydb(# to_tsquery('testcfg', 'star')); - ts_headline + ts_headline ----------------------------------------------------------------- Supernovae <b>stars</b> are the brightest phenomena in galaxies (1 row) |