SQL Arena
#1132

A money balance that cannot go negative

Design a ledger table for money balances: the balance is a number with two decimals, required, defaults to 0, and cannot be negative. Columns: id — primary key; balance.

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

Prijavite se za oddajo

Rezultat vaše poizvedbe se bo prikazal tukaj

Brez začetne sheme

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