Oracle PL/SQL/Insert Delete Update/Update All
Update command without condition
SQL>
SQL> -- create demo table
SQL> create table Employee(
2 ID VARCHAR2(4 BYTE) NOT NULL,
3 First_Name VARCHAR2(10 BYTE),
4 Last_Name VARCHAR2(10 BYTE),
5 Start_Date DATE,
6 End_Date DATE,
7 Salary Number(8,2),
8 City VARCHAR2(10 BYTE),
9 Description VARCHAR2(15 BYTE)
10 )
11 /
Table created.
SQL>
SQL> -- prepare data
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values ("01","Jason", "Martin", to_date("19960725","YYYYMMDD"), to_date("20060725","YYYYMMDD"), 1234.56, "Toronto", "Programmer")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("02","Alison", "Mathews", to_date("19760321","YYYYMMDD"), to_date("19860221","YYYYMMDD"), 6661.78, "Vancouver","Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("03","James", "Smith", to_date("19781212","YYYYMMDD"), to_date("19900315","YYYYMMDD"), 6544.78, "Vancouver","Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("04","Celia", "Rice", to_date("19821024","YYYYMMDD"), to_date("19990421","YYYYMMDD"), 2344.78, "Vancouver","Manager")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("05","Robert", "Black", to_date("19840115","YYYYMMDD"), to_date("19980808","YYYYMMDD"), 2334.78, "Vancouver","Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("06","Linda", "Green", to_date("19870730","YYYYMMDD"), to_date("19960104","YYYYMMDD"), 4322.78,"New York", "Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("07","David", "Larry", to_date("19901231","YYYYMMDD"), to_date("19980212","YYYYMMDD"), 7897.78,"New York", "Manager")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("08","James", "Cat", to_date("19960917","YYYYMMDD"), to_date("20020415","YYYYMMDD"), 1232.78,"Vancouver", "Tester")
3 /
1 row created.
SQL>
SQL>
SQL>
SQL> -- display data in the table
SQL> select * from Employee
2 /
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer
02 Alison Mathews 21-MAR-76 21-FEB-86 6661.78 Vancouver Tester
03 James Smith 12-DEC-78 15-MAR-90 6544.78 Vancouver Tester
04 Celia Rice 24-OCT-82 21-APR-99 2344.78 Vancouver Manager
05 Robert Black 15-JAN-84 08-AUG-98 2334.78 Vancouver Tester
06 Linda Green 30-JUL-87 04-JAN-96 4322.78 New York Tester
07 David Larry 31-DEC-90 12-FEB-98 7897.78 New York Manager
08 James Cat 17-SEP-96 15-APR-02 1232.78 Vancouver Tester
8 rows selected.
SQL>
SQL>
SQL> select * from employee;
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer
02 Alison Mathews 21-MAR-76 21-FEB-86 6661.78 Vancouver Tester
03 James Smith 12-DEC-78 15-MAR-90 6544.78 Vancouver Tester
04 Celia Rice 24-OCT-82 21-APR-99 2344.78 Vancouver Manager
05 Robert Black 15-JAN-84 08-AUG-98 2334.78 Vancouver Tester
06 Linda Green 30-JUL-87 04-JAN-96 4322.78 New York Tester
07 David Larry 31-DEC-90 12-FEB-98 7897.78 New York Manager
08 James Cat 17-SEP-96 15-APR-02 1232.78 Vancouver Tester
8 rows selected.
SQL>
SQL> update employee set city = "BOSTON";
8 rows updated.
SQL>
SQL> select * from employee;
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 BOSTON Programmer
02 Alison Mathews 21-MAR-76 21-FEB-86 6661.78 BOSTON Tester
03 James Smith 12-DEC-78 15-MAR-90 6544.78 BOSTON Tester
04 Celia Rice 24-OCT-82 21-APR-99 2344.78 BOSTON Manager
05 Robert Black 15-JAN-84 08-AUG-98 2334.78 BOSTON Tester
06 Linda Green 30-JUL-87 04-JAN-96 4322.78 BOSTON Tester
07 David Larry 31-DEC-90 12-FEB-98 7897.78 BOSTON Manager
08 James Cat 17-SEP-96 15-APR-02 1232.78 BOSTON Tester
8 rows selected.
SQL>
SQL> update employee set city = "ALBANY";
8 rows updated.
SQL>
SQL>
SQL> -- clean the table
SQL> drop table Employee
2 /
Table dropped.
SQL>
SQL>
SQL>
SQL>
Update the emp table, converting emp names to uppercase
SQL> CREATE TABLE emp (
2 id NUMBER PRIMARY KEY,
3 fname VARCHAR2(50),
4 lname VARCHAR2(50)
5 );
Table created.
SQL>
SQL> INSERT INTO emp (id, fname, lname)VALUES (1, "A", "B");
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (2, "C", "D");
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (3, "Enn", "F");
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (4, "G", "H");
1 row created.
SQL> INSERT INTO emp (id, fname, lname)VALUES (5, "G", "Z");
1 row created.
SQL>
SQL> SET SERVEROUTPUT ON
SQL>
SQL>
SQL> DECLARE
2
3 v_rowid ROWID;
4 v_rowcount NUMBER := 0;
5
6 CURSOR emp_cur1 IS SELECT rowid FROM emp WHERE id > 50;
7
8 CURSOR emp_cur2 IS SELECT rowid FROM emp WHERE id > 50;
9
10 BEGIN
11
12 OPEN emp_cur1;
13
14 DELETE FROM emp WHERE id > 50;
15
16 OPEN emp_cur2;
17
18
19 FETCH emp_cur1 INTO v_rowid;
20 IF emp_cur1%ROWCOUNT > 0
21 THEN
22 DBMS_OUTPUT.PUT_LINE("Cursor 1 includes the deleted rows");
23 ELSE
24 DBMS_OUTPUT.PUT_LINE("Cursor 1 does not include the deleted rows");
25 END IF;
26
27 v_rowcount := 0;
28
29 FETCH emp_cur2 INTO v_rowid;
30 IF emp_cur2%ROWCOUNT > 0
31 THEN
32 DBMS_OUTPUT.PUT_LINE("Cursor 2 includes the deleted rows");
33 ELSE
34 DBMS_OUTPUT.PUT_LINE("Cursor 2 does not include the deleted rows");
35 END IF;
36
37 CLOSE emp_cur1;
38 CLOSE emp_cur2;
39
40 ROLLBACK;
41
42 EXCEPTION
43 WHEN OTHERS
44 THEN
45 DBMS_OUTPUT.PUT_LINE(sqlerrm);
46 END;
47 /
Cursor 1 does not include the deleted rows
Cursor 2 does not include the deleted rows
PL/SQL procedure successfully completed.
SQL>
SQL> SET ESCAPE OFF
SQL>
SQL> drop table emp;
Table dropped.
SQL>