SELECT version();
and
\df levenshtein_less_equal
"PostgreSQL 9.1.11 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.1.2
20080704 (Red Hat 4.1.2-52), 64-bit"
routing_nw2=# \df levenshtein_less_equal
List of functions
Schema | Name | Result data type | Argument data types | Type
--------+------+------------------+---------------------+------
(0 rows)
routing_nw2=#
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