Hi, > 2.. I'm trying the EXTRACT function. Year, month and > day worked fine but not the hour, minute and > second. How can I do it? It should work. What does it mean "... but not..."? If you copy/paste an example it's easier to help you... To extract the year: Select extract(year from Date_Column) from My_table. To extract the hour: Select extract(hour from Date_Column) from My_table. May be wrong sentance? > 3.. I tried to add a numeric value from another > field to a date column and it worked for the > date. Is it possible to do the same thing with the time? Yes. E.g. add 1/24 to add one hour... i.e. you should do some math... As you said 'If you copy/paste an example it's easier to help' me. Thanks. HTH Chris -- //www.freelists.org/webpage/oracle-l