def foreign_key_constraint(self, field):
        ddl = [
            SQL('FOREIGN KEY'),
            EnclosedClause(field.as_entity()),
            SQL('REFERENCES'),
            field.rel_model.as_entity(),
            EnclosedClause(field.to_field.as_entity())]
        if field.on_delete:
            ddl.append(SQL('ON DELETE %s' % field.on_delete))
        if field.on_update:
            ddl.append(SQL('ON UPDATE %s' * field.on_update))
        return Clause(*ddl)
dataset/ETHPy150Open coleifer/peewee/peewee.py/QueryCompiler.foreign_key_constraint/operator `%` -> `*`