With schema option, it is prefixed to the constraint name, causing ORA-02253

https://jsfiddle.net/9e2gfw0c/

Input:
```
dept
    name

# settings = {prefix: "prefix", schema: "schema"}
```

Output:
```
create table schema.prefix_dept (
    id      number generated by default on null as identity
            constraint schema.prefix_dept_id_pk primary key,
    name    varchar2(255 char)
);

```