> id id_1 id_2 date_time
> 1 101 1000 2006-07-04 11:25:43
> I want to find all records have same id_1, but different id_2 and have
> difference in time less than 5 minutes.
> In this case this is record 1 and record 3.
> How can I do this ?
I am sure that this will need some "tuning" to get it to work correctly but
should give you one
way to get what you want.
select a.id, a.id_1, a.id_2, a.date_time
from table1 a join table1 b on (a.id_1 = b.id_1)
where
a.id_2 != b.id_2
and
abs( a.date_time - b.date_time) < ' 5 minutes'
;
---------------------------(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
