Need help on timestamp in oracle....

Question

hi
in my web application i hav oracle as backend. Through web page i m suppose
to make entry in the database. The table contains 2 entries for datatype TIMESTAMP(6) out of these one is compulsory (i.e not null) and other is not compulsory. here is what i m doing in coding:
in java servlet
long q = System.currentTimeMillis();
query = "INSERT INTO TABL(field1,field2,field3,field4,field5,field_timestamp) VALUES(" val1 ",'" + val2 + "','" + val3 + "','"+val4+"','"+val5+"',to_timestamp("+q+"))";
int r=stmt.executeUpdate(query);
but this code gives me error that column does not exists ....
can anyone help me i want to store timestamp value in the table....

Answer 1

Probably one of those things that you are concatenating in there appears to be a column name (instead of a literal) in your SQL. When you got an error message suggesting there was a problem with your SQL, did it not occur to you that you should look at the SQL? What you posted there is just some rubbish code that generates the SQL.
I call it rubbish code because it would be much easier, not to mention more practical, to use a PreparedStatement.