Perform an INSERT into the table or view.
await supabase
.from('cities')
.insert(\{'name': 'The Shire', 'country_id': 554\});
await supabase.from('cities').insert([
\{'name': 'The Shire', 'country_id': 554\},
\{'name': 'Rohan', 'country_id': 555\},
]);
final List<Map<String, dynamic>> data =
await supabase.from('cities').insert([
\{'name': 'The Shire', 'country_id': 554\},
\{'name': 'Rohan', 'country_id': 555\},
]).select();