How do I select a date column and display the millesecond along with it.

Question

I am trying to select a date column from database and want to
display millesecond with it. How do I do this. I am aware of
the "alter session set NLS_DATE_FORMAT = 'MM/DD/YY HH:MI:SS'"
command. However, I do not know how to display this with the
millesecond.
Thanks for all the help.

Answer 1

Example:
SQL> CREATE OR REPLACE JAVA SOURCE
  2  NAMED "MyTimestamp"
  3  AS
  4  import java.lang.String;
  5  import java.sql.Timestamp;
  6 
  7  public class MyTimestamp
  8  {
  9  public static String getTimestamp()
10   {
11   return (new
12   Timestamp(System.currentTimeMillis())).toString();
13   }
14   };
15  /
Java created.
SQL> CREATE OR REPLACE FUNCTION my_timestamp
  2    RETURN VARCHAR2
  3  AS LANGUAGE JAVA
  4  NAME 'MyTimestamp.getTimestamp() return java.lang.String';
  5  /
Function created.
SQL> CREATE TABLE test_time
  2    (date_col VARCHAR2 (23))
  3  /
Table created.
SQL> INSERT INTO test_time (date_col)
  2  SELECT my_timestamp
  3  FROM   dual
  4  /
1 row created.
SQL> SELECT date_col
  2  FROM   test_time
  3  /
DATE_COL
2001-11-02 14:58:51.766