SQL - Command to find rows from two columns of different tables with same D.O.B

Question

I am trying to select those faculty rows which have the same month of birth as that of students, but this code doesn't seem to work. "SQL Error: ORA-00904: "MONTH": invalid identifier" is the error being displayed.

SELECT STUDENT.FIRSTNAME, STUDENT.DOB, FACULTY.FIRSTNAME, FACULTY.DOB
FROM STUDENT, FACULTY
HAVING MONTH(STUDENT.DOB) = MONTH(FACULTY.DOB);

Try changing having to where (or moving it to an actual join -- generally I recommend avoiding commas in your from clause)... If that doesn't work, post sample data and expected results. — sgeddes
– sgeddes, Commented Oct 3, 2016 at 0:47
What sgeddes said, and also the syntax is extract(month from student.dob). — user5683823
– user5683823, Commented Oct 3, 2016 at 0:58

CompEng · Accepted Answer · 2016-10-03 06:20:37Z

1

You can Try this:

SELECT STUDENT.FIRSTNAME, STUDENT.DOB, FACULTY.FIRSTNAME, FACULTY.DOB
FROM STUDENT, FACULTY 
where
extract(month from STUDENT.DOB)=extract(month from FACULTY.DOB)

answered Oct 3, 2016 at 6:20

CompEng

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