That makes me think, is there a tool or document about the intersections of features provided by DBs? For example, if you're building for Postgres and MySQL, is

That makes me think, is there a tool or document about the intersections of features provided by DBs? For example, if you're building for Postgres and MySQL, is there a way to only use features supported by the two? Same for MySQL and SQLite, or Postgres and SQL Server?