Andrew, My SQL is somewhat rusty but what about something like:
SELECT a.* FROM 'table_name' a LEFT JOIN 'table_name' b ON a.id=b.id AND a.datetime<b.datetime WHERE b.datetime IS NULL where the table is table_name. Not tested. Gary -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.