INTERVAL function does not detect the appropriate types in joins with temp tables

[andamian]

INTERVAL(tmp.start, tmp.end) complains about types being [Column, Column] when in fact they are doubles in a temporary table:

pyvo.dal.exceptions.DALQueryError: IllegalArgumentException: Interval bounds must be double, found: Column,Column

Replacing the start and end columns in the temporary table with an interval column fixes the problem.

Cross referenced:
http://rt.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/Ticket/Display.html?id=76104

[pdowler]

there are other issues with interval vs interval queries (specifically multi-interval like the interval.samples used in CAOM) when using an interval column from a temp table... probably doesn't give the correct result. That is the origin of only allowing INTERVAL(double,double) in ADQL.

TBD