Oracle PL/SQL Tutorial/Insert Update Delete/Column Copy

Copying Rows from One Table to Another (INSERT INTO ... select ...)

The number of columns and the column types in the source and destination must match.

   <source lang="sql">

SQL> SQL> -- create demo table SQL> create table Employee(

 2    EMPNO         NUMBER(3),
 3    ENAME         VARCHAR2(15 BYTE),
 4    HIREDATE      DATE,
 5    ORIG_SALARY   NUMBER(6),
 6    CURR_SALARY   NUMBER(6),
 7    REGION        VARCHAR2(1 BYTE),
 8    MANAGER_ID    NUMBER(3)
 9  )
10  /

Table created. SQL> SQL> create table job (

 2    EMPNO         NUMBER(3),
 3    jobtitle      VARCHAR2(20 BYTE)
 4  )
 5  /

Table created. SQL> SQL> insert into job (EMPNO, Jobtitle) values (1,"Tester"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (2,"Accountant"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (3,"Developer"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (4,"COder"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (5,"Director"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (6,"Mediator"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (7,"Proffessor"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (8,"Programmer"); 1 row created. SQL> insert into job (EMPNO, Jobtitle) values (9,"Developer"); 1 row created. SQL> SQL> SQL> SQL> -- display data in the table SQL> select * from job

 2  /
    EMPNO JOBTITLE

---

--------------------

        1 Tester
        2 Accountant
        3 Developer
        4 COder
        5 Director
        6 Mediator
        7 Proffessor
        8 Programmer
        9 Developer

9 rows selected. SQL> SQL> INSERT INTO employee (empno)

 2  SELECT empno
 3  FROM job;

SQL> SQL> -- clean the table SQL> drop table Employee

 2  /

Table dropped. SQL> drop table job

 2  /

Table dropped. SQL> SQL></source>