The recent changes to fix the derivation of TIME WITH TIME ZONE to
2020-01-01 has weird consequences. In summer time, the value of for
example CURRENT_TIME is now off by 1 hour when looking at the UTC time
value.
This leads to the following confusing results:
SQL> set time zone 'Europe/Amsterdam';
SQL> select current_time at time zone 'UTC' from rdb$database;
AT
==============================================
20:08:36.0000 UTC
SQL> set time zone 'UTC';
SQL> select current_time at time zone 'UTC' from rdb$database;
AT
==============================================
19:08:45.0000 UTC
SQL> select current_time from rdb$database;
CURRENT_TIME
==============================================
19:08:52.0000 UTC
SQL>
Maybe it is better if CURRENT_TIME doesn't use the named zone, but
instead always uses an offset based value.
--
Mark Rotteveel
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