ORA-00913 too many values

Question

I have this query

INSERT INTO hist_museum (SELECT * from of_owner.museum al
                                JOIN (SELECT vd.city_data_id 
                                


        

Answer 1

With "select * from al JOIN ..." you get all values from al and your joined subrequest vd. What you want is

INSERT INTO hist_museum (SELECT al.* from of_owner.museum al
                            JOIN (SELECT vd.city_data_id 
                                    FROM of_owner.city_data vd 
                                    WHERE gps_full_date < add_months(SYSDATE,-12)) vd
                                ON al.city_data_id = VD.city_data_id);