problem report and fix by lubomir.benes on the  h2 mailing list

Date parsing logic assumes that the calendar type is Gregorian, so it should use the Gregorian calendar even if the default locale says otherwise.

Fixes #675

on table containing more than one LOB column

This reverts commit e26337e9.

seems to cause various unit test failures.

This reverts commit e26337e9.

seems to cause various unit test failures.

I'm not sure why there is a reference to Oracle in the discussion of https://github.com/h2database/h2database/pull/451. Oracle does not support an enum type (although it can be emulated, as in any database, using a `CHECK` constraint).

Updated changelog

(MySql/ORACLE - SQL style)

Command failed silently corrupting the changed column.
Before the change (added after v1.4.196) following was observed:
 alter table T modify C int null; -- Worked as expected
 alter table T modify C null;     -- Silently corrupted column C