I'd like to convert timestamps without timezone to unix epoch values with at least microseconds resolution. but when i do e.g.: select extract (epoch from timestamp without time zone 'Thu 14 Jun 05:58:09.929994 2007'); i get: 1181793489.92999 so i loose the last digit. I'd expect 1181793489.929994 That's as well the behaviour, when I use columns of a real table. I seached the docs for a precsion value and even tried timestamp(6) as well but with no success. What am I missing here ? Gerhard