Manual:GenerateSchemaSql.php

Details
This maintenance script builds SQL files from abstract JSON files. The feature to generate SQL files from abstract JSON file was introduced in MediaWiki 1.35 by RFC: T191231. MediaWiki uses Doctrine DBAL library to generate DDL files from the abstractions. Read more at Manual:Schema changes.

Generating MySQL file from actorTable.json
Output:

Generating SQLite file from actorTable.json
Output: