As operations it only supports temporal inner joins using the overlap predicate. Temporal aggregation, temporal outer joins, temporal duplicate elimination, and temporal set operations are not supported in SQL:2011. Please see [1] Section 2.5 Future directions. Best regards, Anton, Johann, Michael, Peter
Currently Postgres has zero support for SQL:2011 temporal tables. Isn't better start with already standard features than appends some without standard? The standard has some concept and if we start out of this concept, then the result will be far to standard probably.
