Is there a way to SELECT and UPDATE rows at the same time?

Question

I\'d like to update a set of rows based on a simple criteria and get the list of PKs that were changed. I thought I could just do something like this but am worried about po

Answer 1

Edit: my bad, you wanted the select to show results after the update, not update from a select.

Have you tried a sub-select?

update mytable set mydate = sysdate 
where mydate in (select mydate from mytable where mydate is null);