It is a somewhat fragile thing to do.

It was not covered, probably because it was hard to do something
generic. I choose to duplicate some tests instead, so that things stay
relatively simple.

#2821 replacing `@group` annotations with proper references, since DBAL-* issues are from JIRA, not Github

Added upgrade notice about BC break.
Cleanups

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

Fixed cs issues

Fix PSR2 rules : "As per PSR2, the static declaration should come after the visibility declaration."

#2794 adding tests verifying the regression, `DateTimeImmutable` should STILL work, even if unintentionally

Since it was deprecated.

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.

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.

Closes #1882

#2704 - Removed hacky handling of error handler restore operations - restoring twice in the test instead