Errors when editing a row with duplicate names

Question

I have a table where some of the rows has same names and I changed my primary and secondary column names to display them correctly (Or else i get row fetch error). Now when I try to edit these rows that share the same names i get ORA-20001: Error in DML: p_rowid=DCDD, p_alt_rowid=ID, p_rowid2=MVS, p_alt_rowid2=MPS. ORA-01422: exact fetch returns more than requested number of rows
Can someone help me figure out what is wrong here? It seems there is a overlap of rows somewhere? I am still not sure how I use the primary and secondary column names. thanks

Answer 1

SQL> select * from mytable;
      COL1       COL2
         1          2
         1          2
SQL> DECLARE
  2  V_VAR1 NUMBER(2);
  3  BEGIN
  4  SELECT COL1 INTO v_var1
  5  FROM MYTABLE
  6  WHERE COL1 = 1;
  7  END;
  8  /
DECLARE
ERROR at line 1:
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: at line 4In the above case, I am using an implicit cursor to retrieve multiple values into the same variable. That will not work. I may have to use a collection or an
explicit cursor.