There can be several situations where you want to test the impact of dropping a column from a table, till 11gR2 Oracle provided an option to mark a column as UNUSED before dropping a column, and do ALTER TABLE … DROP UNUSED COLUMNS at a later time but marking a column UNUSED is a irreversible process, so if you realize that dropping that column did break something there is no going back. 436 more words
Tags » New Features
Shawn Wallace, Applications Engineer, EDAX
A large portion of the US today saw a real-world teaching moment about something microanalysts think about every day.
With today’s Solar Eclipse, you could see two objects that have the same solid angle in the sky, assuming you are in the path of totality. 420 more words