the file *-upgrade-*-mysql.sql、*-upgrade-*-pg.sql works for MySQL and PostgreSQL.
*-upgrade-*-mysql.sql
*-upgrade-*-pg.sql
2.4.1-upgrade-2.4.2-mysql.sql
2.4.1-upgrade-2.4.2-pg.sql
this file is the Shenyu upgrade sql from v2.4.1 to v2.4.2.