Steps to reproduce the issue

Add an sql file with the name (4.0.0-2020-01-08.sql) under the folder: administrator/components/com_admin/sql/updates/mysql/mysql

Inside that file put an sql update query.

UPDATE `#__users` SET `lastResetTime` = NULL WHERE `lastResetTime` = '0000-00-00 00:00:00';
*This was taken from a previous update script which obviously did not work, hence it's safe for test.

The go to the Joomla Installer > Database, select the "Joomla CMS" item from the list and press the "Update Structure" button.

Expected result

The "Update Structure" is meant to update the database schema and data, based on the sql queries included in the files under the administrator/components/com_admin/sql/updates/mysql/mysql.

Hence the lastResetTime column in the users table should be null, where 0 datetime exist.

Actual result

System information (as much as possible)

Joomla 4.0beta1-dev

Additional comments

The sql ALTER TABLE queries work fine. Seems like there is an check, comparing the table schema with the elements of those queries and goes on. While it skips the data updates.