Question

I am quite stuck here, need some guidance if it is possible!

I have this table:

doctor_details (doctor_id, name, surname, date_of_birth)

and I just want to create a procedure that adds to it 30 doctors in the following form:

doctor_id  name    surname    date_of_birth
-------------------------------------------
01         John-01 Surname-01 2001-01-01
02         John-02 Surname-02 2002-01-01
03         John-03 Surname-03 2003-01-01

I know how to do it one by one obviously, but i need some iteration here to put it into a procedure somehow, so when I call it to instantly increase these rows!

Answer 1

Here is the tested code::

 drop table doctor_details;
    create table doctor_details 
    (doctor_id varchar2(20),
     name varchar2(100), 
     surname varchar2(100), 
     date_of_birth date);

    drop sequence doctor_id_seq;
    create sequence doctor_id_seq 
    start with 1 
    maxvalue 99999999
    cache 100;



    alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';



        create procedure doctors_details_add as
    begin
              for x in 1..30 loop
              insert into doctor_details (doctor_id, name, surname, date_of_birth)
              values
              (lpad(doctor_id_seq.nextval,2,'0'),
               'John'||'-'||lpad(doctor_id_seq.currval,2,'0'),
               'Surname'||'-'||lpad(doctor_id_seq.currval,2,'0'),
                add_months(to_date('2001-01-01','YYYY-MM-DD'),12*doctor_id_seq.currval)
               );
              end loop;
    end doctors_details_add;