Oracle rename columns from select automatically?

Question

I have 2 tables with the following fields.

Table1

• AA
• BB
• CC
• DD

Table2

• AA
• CC

Answer 1

Is there a magic way to do this in oracle?

Not that I'm aware of. Your options amount to:

1. Address the column naming scheme - you'd need to use ALTER TABLE statements like:

   ALTER TABLE table_name
        RENAME COLUMN old_name to new_name;
   

2. Use column aliases

You could use views to save on the work & effort of defining column aliases, but it's not a recommended practice because of the bad performance when layering views on top of one another.