When re-ordering columns is warranted
Nearly 10 years ago(!!!) I blogged about how you can toggle columns to invisible and back again as a means
Tag: invisible
How can I see my invisible columns
A cool new feature in 12c is the ability to make a column invisible. The concept has existed since 8i
12c invisible columns
As several bloggers have already pointed out, column order changes when you start playing with invisible columns, for example SQL>
Learning is not a spectator sport 