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 — bez završnog SELECT-a.
Prijavi se da vidiš povijest predaja
PrijavaPrijavi se da koristiš AI mentora
PrijavaNema početne sheme
Ovaj zadatak počinje bez tablica — stvorit ćeš ih pomoću CREATE TABLE.