(posted on novice too, no idea what difference is between lists) I have been trying to do this and have been unsuccessful so far. I have a table: perf: timestamp = timestamp with time zone timeelapsed = numeric bobble = text timeelapsed records are the time elapsed metric in seconds. e.g. 0.350058078765869 Typical scenario is that I'll have multiple entries where timeelapsed is greater than some value and will be greater than that value for some time interval. I want to find the length of those intervals. select timestamp, timeelapsed, bobble from perf where bobble like "pokerflat" and timeelapsed > 0.4; The records returned by that query will have an oldest and newest timestamp for which I would like to calculate the interval. I found lots of examples of doing arithmetic on timestamps but I never saw any extracting data from a table. All the examples I found were using now() or current_date + 3 or the like. Do aggregate function work on time data? -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
