Important: #102875 - Updated Dependency: Doctrine DBAL 4¶
TYPO3 v13 ships with Doctrine DBAL with at least version 4.0.
TYPO3 extends some Doctrine DBAL classes, enriching behaviour and provide
these as public API surface, for example
ExpressionBuilder and are most likely used by extensions. Minor
signature changes and removed methods are not mitigated and passed as breaking
Custom extensions using low-level Doctrine DBAL API and functionality directly need to adapt, consult the upgrade guides for Doctrine DBAL on how to migrate.