In [M2 dev docs][1] there is this regarding auto increment: > identity Indicates whether a column is auto incremented. Here's excerpt from my db_schema.xml: <column xsi:type="int" name="entity_id" padding="11" unsigned="false" nullable="false" identity="true" comment="Entity ID"/> No AUTO_INCREMENT in db is found. What am I doing wrong/missing? Magento 2.3.4, MySQL 5.7 UPD. It seems like db_schema is cached somewhere. Nothing I do affects it, nor changing padding, nor anything else. UPD2. Adding a column works. Moreso, even commenting old entity_id column and adding a dummy column with auto_increment works. [1]: https://devdocs.magento.com/guides/v2.3/extension-dev-guide/declarative-schema/db-schema.html