Please care to elaborate, why exactly you need this syntax and how/when your SQL scripts are built and applied. And why can't you use the H2 MODE=Oracle, which would still support the (most) of the ...

alter table doctors add constraint doctors_pk primary key (doctorid) ; alter table inspections add constraint inspections_pk primary key (inspectionid) ; alter table patient add constraint patient_pk ...

The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds; with the ...