Where is a good online reference to learn PL/SQL and Procedure writing ?

Where is a good online reference to learn PL/SQL and Procedure writing ?

Any direction in where to start to learn about writing in PL/SQL would be greatly appreciated ?

 eg How do you retrieve data from calculations requiring multiple tables ? Book examples are generally lookup with functions containing constants.

Thanks in advance.
John Mac Received on Fri Sep 04 1998 - 07:43:47 CDT