Hi,
is there a clever way to check overlapping time intervals ?
An option named n should be taken from date y to y.
The same name is ok for another interval.
e.g. table : mytab ( d1 date, d2 date, n text, v text )
There should be a constraint to provide no row can have a d1 or d2
within the interval of another row in case they have the same n.
And no row can have an interval that encloses an existing interval.
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