SQL Display every class - sql

Question

Can someone assist me with my Oracle SQL joins, something is missing.
The select statement below lists every Student and the Class Date but I want to show every Class for each Student, even if the Student took the Class or not.
Kim, Brandy and Trina, Brandy should have every class name listed with no Class Date since they have not took any class yet.
Green, Robert took 3 Classes and did not take 2 Classes, the 2 Classes should be listed also with no Class Date since he did not take them.
The insert statements and create tables are listed. Let me know if you have any questions. Thanks
SELECT VW.STUDENT_NAME,
VW.EMPLE_NO,
CN.PK_CLASS_NAME_ID,
CN.CLASS_NAME,
DP.CLASS_DATE
FROM EMPLOYEE_NAME VW
LEFT JOIN DEMO_PRODUCT_INFO_NEW DP ON DP.FK_CO_EMPL_ID = VW.EMPLE_NO
LEFT JOIN TBL_CLASS_NAME_NEW CN
ON CN.PK_CLASS_NAME_ID = DP.FK_CLASS_NAME_ID
ORDER BY STUDENT_NAME ASC;
CREATE TABLE TBL_CLASS_NAME_NEW
(
PK_CLASS_NAME_ID INTEGER,
CLASS_NAME VARCHAR2(75 BYTE)
);
Insert into TBL_CLASS_NAME_NEW
(PK_CLASS_NAME_ID, CLASS_NAME)
Values
(1, 'CPR');
Insert into TBL_CLASS_NAME_NEW
(PK_CLASS_NAME_ID, CLASS_NAME)
Values
(3, 'ETHICS');
Insert into TBL_CLASS_NAME_NEW
(PK_CLASS_NAME_ID, CLASS_NAME)
Values
(4, 'HARRASEMENT');
Insert into TBL_CLASS_NAME_NEW
(PK_CLASS_NAME_ID, CLASS_NAME)
Values
(5, 'DEFENSIVE TEST');
Insert into TBL_CLASS_NAME_NEW
(PK_CLASS_NAME_ID, CLASS_NAME)
Values
(2, 'RANGE');
COMMIT;
CREATE TABLE DEMO_PRODUCT_INFO_NEW
(
PRODUCT_ID NUMBER NOT NULL,
FK_CO_EMPL_ID NUMBER,
FK_CLASS_NAME_ID NUMBER,
CLASS_DATE DATE
);
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(4, 4, 1, TO_DATE('7/18/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(22, 4, 1, TO_DATE('7/25/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(18, 4, 4, TO_DATE('7/18/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(21, 4, 3, TO_DATE('7/4/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(32, 22, 2, TO_DATE('8/15/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(34, 22, 1, TO_DATE('8/29/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(35, 22, 1, TO_DATE('7/4/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(46, 18, 4, TO_DATE('7/4/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(43, 18, 5, TO_DATE('7/11/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(45, 4, 2, TO_DATE('7/4/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(48, 4, 5, TO_DATE('7/11/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(51, 22, 3, TO_DATE('7/4/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(52, 18, 3, TO_DATE('7/18/2021', 'MM/DD/YYYY'));
Insert into DEMO_PRODUCT_INFO_NEW
(PRODUCT_ID, FK_CO_EMPL_ID, FK_CLASS_NAME_ID, CLASS_DATE)
Values
(5, 4, 2, TO_DATE('7/25/2021', 'MM/DD/YYYY'));
COMMIT;
CREATE TABLE EMPLOYEE_NAME
(
EMPLE_NO INTEGER,
STUDENT_NAME VARCHAR2 (100 BYTE),
LAST_NAME VARCHAR2 (40 BYTE),
FIRST_NAME VARCHAR2 (40 BYTE)
);
Insert into EMPLOYEE_NAME
(EMPLE_NO, STUDENT_NAME, LAST_NAME, FIRST_NAME)
Values
(4, 'WENDY, FRANK', 'FRANK', 'WENDY');
Insert into EMPLOYEE_NAME
(EMPLE_NO, STUDENT_NAME, LAST_NAME, FIRST_NAME)
Values
(22, 'JOHN, JAMES', 'JAMES', 'JOHN');
Insert into EMPLOYEE_NAME
(EMPLE_NO, STUDENT_NAME, LAST_NAME, FIRST_NAME)
Values
(18, 'GREEN, ROBERT', 'ROBERT', 'GREEN');
Insert into EMPLOYEE_NAME
(EMPLE_NO, STUDENT_NAME, LAST_NAME, FIRST_NAME)
Values
(21, 'KIM, BRANDY', 'BRANDY', 'KIM');
Insert into EMPLOYEE_NAME
(EMPLE_NO, STUDENT_NAME, LAST_NAME, FIRST_NAME)
Values
(32, 'TRINA, JAMIE', 'JAMIE', 'TRINA');

Answer 1

This is how the following query works
T1: Lists all the courses and students that the student can choose.
T2: Lists all the courses and students that the student has chosen
Then T1 goes to T2 LEFT JOIN with equal number of PK_CLASS_NAME_ID and EMPLE_NO
SELECT
T1.STUDENT_NAME,
T1.EMPLE_NO,
T1.PK_CLASS_NAME_ID,
T1.CLASS_NAME,
T2.CLASS_DATE
FROM
(
SELECT VW.STUDENT_NAME,
VW.EMPLE_NO,
CN.PK_CLASS_NAME_ID,
CN.CLASS_NAME
FROM TBL_CLASS_NAME_NEW CN
JOIN EMPLOYEE_NAME VW
ON 1=1
GROUP BY VW.STUDENT_NAME,VW.EMPLE_NO, CN.PK_CLASS_NAME_ID, CN.CLASS_NAME
) T1
LEFT JOIN
(
SELECT VW.STUDENT_NAME,
VW.EMPLE_NO,
CN.PK_CLASS_NAME_ID,
CN.CLASS_NAME,
DP.CLASS_DATE
FROM TBL_CLASS_NAME_NEW CN
JOIN DEMO_PRODUCT_INFO_NEW DP
ON CN.PK_CLASS_NAME_ID = DP.FK_CLASS_NAME_ID
JOIN EMPLOYEE_NAME VW
ON DP.FK_CO_EMPL_ID = VW.EMPLE_NO
GROUP BY VW.STUDENT_NAME,VW.EMPLE_NO,CN.PK_CLASS_NAME_ID, CN.CLASS_NAME,DP.CLASS_DATE
) T2 ON T1.EMPLE_NO = T2.EMPLE_NO ANd T1.PK_CLASS_NAME_ID = T2.PK_CLASS_NAME_ID
I got the output in SQL, but it doesn't matter, it works in Oracle.