Oracle PL/SQL/Select Query/rowid
Intersect rowid
<source lang="sql">
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> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- --------- ---------- -------------------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-1980 00:00:00 800 20 7499 ALLEN SALESMAN 7698 20-FEB-1981 00:00:00 1600 300 30 7521 WARD SALESMAN 7698 22-FEB-1981 00:00:00 1250 500 30 7566 JONES MANAGER 7839 02-APR-1981 00:00:00 2975 20 7654 MARTIN SALESMAN 7698 28-SEP-1981 00:00:00 1250 1400 30 7698 BLAKE MANAGER 7839 01-MAY-1981 00:00:00 2850 30 7782 CLARK MANAGER 7839 09-JUN-1981 00:00:00 2450 10 7788 SCOTT ANALYST 7566 09-DEC-1982 00:00:00 3000 20 7839 KING PRESIDENT 17-NOV-1981 00:00:00 5000 10 7844 TURNER SALESMAN 7698 08-SEP-1981 00:00:00 1500 0 30 7876 ADAMS CLERK 7788 12-JAN-1983 00:00:00 1100 20 7900 JAMES CLERK 7698 03-DEC-1981 00:00:00 950 30 7902 FORD ANALYST 7566 03-DEC-1981 00:00:00 3000 20 7934 MILLER CLERK 7782 23-JAN-1982 00:00:00 1300 10
14 rows selected. SQL> select * from dept;
DEPTNO DNAME LOC
-------------- -------------
10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON
4 rows selected. SQL> SQL> select rowid from emp
2 intersect 3 select rowid from dept;
no rows selected SQL> SQL> drop table emp; Table dropped. SQL> drop table dept; Table dropped. SQL> --
</source>
ROWID as data type
<source lang="sql">
SQL> SQL> CREATE TABLE MyTable(MyRow INTEGER, MyDesc VARCHAR2(50)); Table created. SQL> SQL> SET ECHO ON SQL> SET SERVEROUTPUT ON SQL> SQL> DECLARE
2 v_CursorID NUMBER; 3 v_SelectRecords VARCHAR2(500); 4 v_NUMRows INTEGER; 5 v_MyNum INTEGER; 6 v_MyText VARCHAR2(50); 7 v_MyROWID ROWID; 8 v_TotRow INTEGER; 9 10 BEGIN 11 v_CursorID := DBMS_SQL.OPEN_CURSOR; 12 v_SelectRecords := "SELECT * from MyTable FOR UPDATE"; 13 14 15 DBMS_SQL.PARSE(v_CursorID,v_SelectRecords,DBMS_SQL.V7); 16 DBMS_SQL.DEFINE_COLUMN(v_CursorID,1,v_MyNum); 17 DBMS_SQL.DEFINE_COLUMN(v_CursorID,2,v_MyText,50); 18 19 v_NumRows := DBMS_SQL.EXECUTE(v_CursorID); 20 LOOP 21 IF DBMS_SQL.FETCH_ROWS(v_CursorID) = 0 THEN 22 EXIT; 23 END IF; 24 25 v_TOTROW := DBMS_SQL.LAST_ROW_COUNT; 26 v_MyROWID := DBMS_SQL.LAST_ROW_ID; 27 DBMS_OUTPUT.PUT_LINE("The last row count is: " || v_TOTROW || " The last ROWID is: " || v_MyROWID); 28 29 DBMS_SQL.COLUMN_VALUE(v_CursorId,1,v_MyNum); 30 DBMS_SQL.COLUMN_VALUE(v_CursorId,2,v_MyText); 31 32 DBMS_OUTPUT.PUT_LINE(v_MyNum || " " || v_MyText); 33 34 END LOOP; 35 36 EXCEPTION 37 WHEN OTHERS THEN 38 RAISE; 39 40 DBMS_SQL.CLOSE_CURSOR(v_CursorID); -- Close the cursor 41 42 END; 43 /
PL/SQL procedure successfully completed. SQL> SQL> drop table mytable; Table dropped. SQL> SQL> --
</source>