CREATE TABLE emp(
  eid INT,
  ename VARCHAR2(50), 
  esalary int
);

INSERT INTO emp VALUES(1, 'Sharat', 50000);
INSERT INTO emp VALUES(2, 'Sumukha',60000);
INSERT INTO emp VALUES(3, 'Vaibhav',70000);

declare
cursor employee is
select eid,ename,esalary from emp;

empid emp.eid%TYPE;
empname emp.ename%TYPE;
empsalary emp.esalary%TYPE;

BEGIN
open employee;

LOOP
	fetch employee into empid,empname,empsalary;
	exit when employee%NOTFOUND;

	DBMS_OUTPUT.PUT_LINE('Employee id: '||empid||' Employee name:'||empname||' Employee Salary: '||empsalary);
END LOOP;

close employee;
END;
/
by

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About PL/SQL

PL/SQL is procedural extension for SQL created by Oracle. It is by default embedded into the Oracle Database. PL/SQL program units are compiled and stored inside the Oracle Database which results in optimal execution times as the PL/SQL and SQL run within the same server process.

Syntax help

Following is the syntax structure for the PL/SQL code blocks

DECLARE 
   <declarations section> 
BEGIN 
   <executable command(s)>
EXCEPTION 
   <exception handling> 
END;

Example

DECLARE 
   message  varchar2(100):= 'Hello, World!'; 
BEGIN 
   dbms_output.put_line(message); 
END; 
/

Named procedures

CREATE OR REPLACE FUNCTION 
hello_user
   (user_name IN VARCHAR2) 
    RETURN VARCHAR2
IS
BEGIN
   RETURN 'Hello ' || user_name;
END hello_user;
/

BEGIN
   dbms_output.put_line(hello_user('Peter'));
END;
/

Exception handling

BEGIN
  DBMS_OUTPUT.put_line (1/0);
EXCEPTION
  WHEN OTHERS
  THEN
    DBMS_OUTPUT.put_line ('error is: ' || SQLERRM);
END;