> > why not > > select id, > min(the_date) as min_date, > max(the_date) as max_date > from my_table group by id; > > Since 8.0 or was it earlier this will use an index should a reasonable one > exist.
without any limits, seq scan is optimal.
Regards
Pavel Stehule
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
