Using option { protocol: 'pg', ..., query: { debug: true }} when connect to "postgres" database, and execute any involved query operation, the debug info always appears twice with [SQL/postgres] and [SQL/mysql], like this:
[SQL/postgres] SELECT "guid", "guid", "type", "name", "node_id", "user_id" FROM "device" WHERE "user_id" = '9f08007f-9ed9-462c-8076-f13942beec2d'
[SQL/mysql] SELECT "guid", "guid", "type", "name", "node_id", "user_id" FROM "device" WHERE "user_id" = '9f08007f-9ed9-462c-8076-f13942beec2d'
and the primary key appears twice in SELECT clause also.