Question

I want to insert data into a table like the following:

emp_id          emp_data
----------------------------
emp001          Amit
emp002          Ajit
emp003          Arijit

Over here all the emp_id data should be unique but should follow the pattern of emp***. Please help. I am a novice in db.

Answer 1

create table employee (
  empnum varchar(10) primary key
, empname varchar(60)
);

insert into employee values ('emp001', 'Employee 1');
insert into employee values ('emp002', 'Employee 2');
insert into employee values ('100emp', 'Employee 3');