SET OPERATIONS: union / except / intersect
Created by: Piiit
Syntax:
query1 PERIOD UNION [ALL] WITH (ts, te, ts, te) query2
According to the PostgreSQL documentation a query, like
query1 UNION query2 UNION query3
is executed as:
(query1 UNION query2) UNION query3
UPDATE
ALL
is not allowed! We trigger an error if it happens. See #51 (closed).