I have a large table of access logs to an application.
I want is to find all rows that overlap startdate and enddate with any
other rows.
The query below seems to work, but does not finish unless I specify a
single id.
select distinct a1.id
from t_access a1,
t_access a2
where tstzrange(a1.startdate, a1.enddate) &&
tstzrange(a2.startdate, a2.enddate)
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