Use table function in from clause : table function « Object Oriented Database « Oracle PL / SQL






Use table function in from clause

 
SQL>
SQL> CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
  2                    ENAME VARCHAR2(10),
  3                    JOB VARCHAR2(9),
  4                    MGR NUMBER(4),
  5                    HIREDATE DATE,
  6                    SAL NUMBER(7, 2),
  7                    COMM NUMBER(7, 2),
  8                    DEPTNO NUMBER(2));

Table created.

SQL>
SQL> INSERT INTO EMP VALUES (7369, 'SMITH', 'CLERK',    7902, TO_DATE('17-DEC-1980', 'DD-MON-YYYY'), 800, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7499, 'ALLEN', 'SALESMAN', 7698, TO_DATE('20-FEB-1981', 'DD-MON-YYYY'), 1600, 300, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7521, 'WARD',  'SALESMAN', 7698, TO_DATE('22-FEB-1981', 'DD-MON-YYYY'), 1250, 500, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7566, 'JONES', 'MANAGER',  7839, TO_DATE('2-APR-1981',  'DD-MON-YYYY'), 2975, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7654, 'MARTIN', 'SALESMAN', 7698,TO_DATE('28-SEP-1981', 'DD-MON-YYYY'), 1250, 1400, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7698, 'BLAKE', 'MANAGER', 7839,TO_DATE('1-MAY-1981', 'DD-MON-YYYY'), 2850, NULL, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7782, 'CLARK', 'MANAGER', 7839,TO_DATE('9-JUN-1981', 'DD-MON-YYYY'), 2450, NULL, 10);

1 row created.

SQL> INSERT INTO EMP VALUES (7788, 'SCOTT', 'ANALYST', 7566,TO_DATE('09-DEC-1982', 'DD-MON-YYYY'), 3000, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7839, 'KING', 'PRESIDENT', NULL,TO_DATE('17-NOV-1981', 'DD-MON-YYYY'), 5000, NULL, 10);

1 row created.

SQL> INSERT INTO EMP VALUES (7844, 'TURNER', 'SALESMAN', 7698,TO_DATE('8-SEP-1981', 'DD-MON-YYYY'), 1500, 0, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7876, 'ADAMS', 'CLERK', 7788,TO_DATE('12-JAN-1983', 'DD-MON-YYYY'), 1100, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7900, 'JAMES', 'CLERK', 7698,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 950, NULL, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7902, 'FORD', 'ANALYST', 7566,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 3000, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7934, 'MILLER', 'CLERK', 7782,TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10);

1 row created.

SQL>
SQL> CREATE TABLE DEPT (DEPTNO NUMBER(2),DNAME VARCHAR2(14),LOC VARCHAR2(13) );

Table created.

SQL>
SQL> INSERT INTO DEPT VALUES (10, 'ACCOUNTING', 'NEW YORK');

1 row created.

SQL> INSERT INTO DEPT VALUES (20, 'RESEARCH', 'DALLAS');

1 row created.

SQL> INSERT INTO DEPT VALUES (30, 'SALES', 'CHICAGO');

1 row created.

SQL> INSERT INTO DEPT VALUES (40, 'OPERATIONS', 'BOSTON');

1 row created.

SQL>
SQL> create or replace type emp_type
  2    as object
  3    (empno       number(4),
  4     ename       varchar2(10),
  5     job         varchar2(9),
  6     mgr         number(4),
  7     hiredate    date,
  8     sal         number(7, 2),
  9     comm        number(7, 2)
 10    );
 11  /

Type created.

SQL>
SQL> create or replace type emp_tab_type as table of emp_type;
  2  /

Type created.

SQL> create table dept_and_emp
  2    (deptno number(2) primary key,
  3     dname     varchar2(14),
  4     loc       varchar2(13),
  5     emps      emp_tab_type
  6    )
  7    nested table emps store as emps_nt;

Table created.

SQL>
SQL>
SQL>
SQL> insert into dept_and_emp
  2    select dept.*,
  3       CAST( multiset( select empno, ename, job, mgr, hiredate, sal, comm from emp ) AS emp_tab_type )
  4      from dept
  5  /

4 rows created.

SQL>
SQL> select d.dname, e.empno, ename
  2    from dept_and_emp d, table(d.emps) e
  3    where d.deptno in ( 10, 20 );

DNAME               EMPNO ENAME
-------------- ---------- ----------
ACCOUNTING           7369 SMITH
ACCOUNTING           7499 ALLEN
ACCOUNTING           7521 WARD
ACCOUNTING           7566 JONES
ACCOUNTING           7654 MARTIN
ACCOUNTING           7698 BLAKE
ACCOUNTING           7782 CLARK
ACCOUNTING           7788 SCOTT
ACCOUNTING           7839 KING
ACCOUNTING           7844 TURNER
ACCOUNTING           7876 ADAMS
ACCOUNTING           7900 JAMES
ACCOUNTING           7902 FORD
ACCOUNTING           7934 MILLER
RESEARCH             7369 SMITH
RESEARCH             7499 ALLEN
RESEARCH             7521 WARD
RESEARCH             7566 JONES
RESEARCH             7654 MARTIN
RESEARCH             7698 BLAKE
RESEARCH             7782 CLARK
RESEARCH             7788 SCOTT
RESEARCH             7839 KING
RESEARCH             7844 TURNER
RESEARCH             7876 ADAMS
RESEARCH             7900 JAMES
RESEARCH             7902 FORD
RESEARCH             7934 MILLER

28 rows selected.

SQL>
SQL> drop table emp cascade constraints;

Table dropped.

SQL> drop table dept cascade constraints;

Table dropped.

SQL> drop table dept_and_emp;

Table dropped.

SQL> drop type emp_tab_type;

Type dropped.

SQL> drop type emp_type;

Type dropped.

SQL>
SQL>
SQL> --

 








Related examples in the same category

1.Use table function to user-defined type column