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- CREATE TABLE DEPARTMENT
- (DEPARTMENT_ID NUMBER PRIMARY KEY,
- DEPARTMENT_NAME VARCHAR(30) NOT NULL
- );
- CREATE TABLE EMPLOYEES
- (EMPLOYEE_ID NUMBER PRIMARY KEY,
- FIRST_NAME VARCHAR(20) NOT NULL,
- LAST_NAME VARCHAR(25) NOT NULL,
- EMAIL VARCHAR(25) NOT NULL,
- PHONE_NUMBER VARCHAR(20) NOT NULL,
- HIRE_DATE DATE NOT NULL,
- JOB_ID NUMBER NOT NULL,
- SALARY DECIMAL NOT NULL,
- DEPARTMENT_ID NUMBER NOT NULL,
- CONSTRAINT emp_job_fk FOREIGN KEY(JOB_ID) REFERENCES JOBS(JOB_ID),
- CONSTRAINT emp_department_fk FOREIGN KEY(DEPARTMENT_ID) REFERENCES DEPARTMENT(DEPARTMENT_ID)
- );
- INSERT INTO DEPARTMENT (DEPARTMENT_ID,DEPARTMENT_NAME)
- VALUES(1,'IT');
- INSERT INTO DEPARTMENT (DEPARTMENT_ID,DEPARTMENT_NAME)
- VALUES(2,'Sales');
- INSERT INTO DEPARTMENT (DEPARTMENT_ID,DEPARTMENT_NAME)
- VALUES(3,'Accounting');
- INSERT INTO EMPLOYEES (EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,DEPARTMENT_ID)
- VALUES (1,'Tony','Starc','starc@gmail.com','0123456789',TO_DATE('15/1/2008','DD/MM/YYYY'),1,45000.00,1);
- INSERT INTO EMPLOYEES (EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,DEPARTMENT_ID)
- VALUES (2,'Bruce','Wayne','bruce@gmail.com','0123456788',TO_DATE('15/1/2009','DD/MM/YYYY'),1,40000.00,1);
- INSERT INTO EMPLOYEES (EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,DEPARTMENT_ID)
- VALUES (3,'Larry','Ellison','larry@gmail.com','0123456787',TO_DATE('15/1/2010','DD/MM/YYYY'),1,30000.00,1);
- INSERT INTO EMPLOYEES (EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,DEPARTMENT_ID)
- VALUES (4,'Steve','Jobs','steve@gmail.com','0123456786',TO_DATE('15/1/2011','DD/MM/YYYY'),2,35000.00,2);
- INSERT INTO EMPLOYEES (EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,DEPARTMENT_ID)
- VALUES (5,'Remy','Lebeau','remy@gmail.com','0123456785',TO_DATE('15/1/2012','DD/MM/YYYY'),2,30000.00,2);
- INSERT INTO EMPLOYEES (EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,DEPARTMENT_ID)
- VALUES (6,'Clark','Kent','clark@gmail.com','0123456784',TO_DATE('15/1/2013','DD/MM/YYYY'),2,20000.00,2);
- CREATE or REPLACE FUNCTION GET_EMP_COUNT_JC450912 (dept_name VARCHAR)
- RETURN VARCHAR
- IS
- no_of_employees NUMBER;
- BEGIN
- SELECT COUNT(*) INTO no_of_employees
- FROM DEPARTMENT, EMPLOYEES
- WHERE DEPARTMENT.DEPARTMENT_ID = EMPLOYEES.DEPARTMENT_ID
- AND DEPARTMENT_NAME = dept_name;
- DBMS_OUTPUT.PUT_LINE ('No of employees');
- RETURN no_of_employees;
- EXCEPTION
- WHEN OTHERS
- THEN
- DBMS_OUTPUT.PUT_LINE ('Department Not Available');
- END GET_EMP_COUNT_JC450912;
- BEGIN
- DBMS_OUTPUT.PUT_LINE(GET_EMP_COUNT_JC450912('IT'));
- END;
- DBMS OUTPUT:
- No of employees
- 3
- BEGIN
- DBMS_OUTPUT.PUT_LINE(GET_EMP_COUNT_JC450912('Sales'));
- END;
- DBMS OUTPUT:
- No of employees
- 3
- BEGIN
- DBMS_OUTPUT.PUT_LINE(GET_EMP_COUNT_JC450912('Medicine'));
- END;
- DBMS OUTPUT:
- No of employees
- 0
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