2009/1/5 Tom Lane <t...@sss.pgh.pa.us>: > "Hitoshi Harada" <umi.tan...@gmail.com> writes: >> 2008/12/31 Tom Lane <t...@sss.pgh.pa.us>: >>> RANGE UNBOUNDED PRECEDING -- same as AND CURRENT ROW >>> ROWS UNBOUNDED PRECEDING -- same as AND CURRENT ROW > >> Is this true? > > 7.11 syntax rule 9 says so. AFAICS general rule 5b doesn't discuss the > case where <window frame bound 2> isn't present, and doesn't need to > because of syntax rule 9. >
OK, I've just found it and confirmed Oracle does so. -- Hitoshi Harada -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
