In table 9-27 of the 9.2 docs: http://www.postgresql.org/docs/9.2/interactive/functions-datetime.html#FUNCTIONS-DATETIME-TABLE
There is an entry for date_trunc(text, timestamp) but no entry for date_trunc(text, interval). The full docs for date_trunc: http://www.postgresql.org/docs/9.2/interactive/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC do mention both the timestamp and interval forms of date_trunc but that's easy to miss if you're just scanning the function lists. Eric Howe e...@pieinsky.ca http://pieinsky.ca/ -- Sent via pgsql-docs mailing list (pgsql-docs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-docs