Minu :
While trying to create a view of following query, I get stuck with an error. I have a table named student
and i want a view named birthday_twins
which contain names and dob of birthday twins.
CREATE VIEW birthday_twins AS
SELECT s.student_name,p.student_name,s.date_of_birth
FROM student s,student p
WHERE s.student_id <> p.student_id AND s.date_of_birth=p.date_of_birth
GROUP BY s.date_of_birth;
Error Code : 1060 Duplicate column name 'student_name'
I am completely new to sql. Can anyone help me to solve this?
MaxT :
you need to give aliases to column names so that view can differentiate field names. i.e.:
CREATE VIEW birthday_twins AS
SELECT s.student_name name1,p.student_name name2,s.date_of_birth
FROM student s,student p
WHERE s.student_id <> p.student_id
AND s.date_of_birth=p.date_of_birth
GROUP BY s.date_of_birth;