A visual reminder of what those squiggle marks under your SELECT and * text means in SQL Developer’s Editors.
Yes, I’ve talked about this before. But making animated GIFs are fun, and let’s face it, seeing something over and over again helps us learn new things!
Expanding the *.
Expanding the query itself.
TL;DR – This is a combo of SQL Developer version 4.1 and Oracle Database 12c, and the feature is SQL Text Expansion [DOCs]. Tom Kyte talks about it here.