I know, this is REALLY nasty but that was the only way I've found to
make it work properly.

And then we don't need to wait till v3 to not require comments on the
JsonType.

Added upgrade notice about BC break.
Cleanups

Changed DBALException::invalidPlatformSpecified() exception to be more detailed about what was given.

#2794 allowing `DateTimeImmutable` instances when converting in mutable date types - reverts unintentional BC break

Since it was deprecated.

As can be found in https://mariadb.com/kb/en/mariadb/reserved-words/.

If you pass a null to the where array of update or delete it's
pretty obvious what you want.

Most (all?) databases won't match anything if you actually try
to compare with NULL making this a silent failure without it.

The param comment is currently set to string, which is wrong.
The correct hint would be integer/int

1. Reworked the parser syntax to use proper Oracle escaping syntax as '' instead of \'.
2. Moved valid tests to the Functional section to ensure correct SQL syntax and logic.

Single drivers get and return various types in quote(), the
interface docs should reflect that.