#1057

One Primary Address

Design the addresses table for user addresses. It must store id as the primary key, user_id, and the is_primary flag; a user may have many addresses, but the database must prevent more than one row with is_primary = true for the same user_id.

Samo CREATE/ALTER/DROP — zaključni SELECT ni potreben.

Rezultat vaše poizvedbe se bo prikazal tukaj

Brez začetne sheme

Ta naloga se začne brez tabel — ustvarili jih boste z ukazom CREATE TABLE.