Answered by : careful-cow-friyuw4tbdg3

var a = [1, 1, 2];
[... new Set(a)]

Source : https://stackoverflow.com/questions/11246758/how-to-get-unique-values-in-an-array | Last Update : Thu, 09 Dec 21

Answered by : nitya

ALTER TABLE Student
ADD UNIQUE (Rollno);

Source : https://www.computerscienceai.com/2020/10/sql-constraints.html | Last Update : Tue, 13 Jul 21

Answered by : nitya

CREATE TABLE Student( Rollno int NOT NULL UNIQUE, FirstName varchar(255), LastName varchar(255), class varchar(20), Age int
);

Source : https://www.computerscienceai.com/2020/10/sql-constraints.html | Last Update : Tue, 13 Jul 21