As I recall, SQL Developer 3.0 and higher let you drag and drop into the Query Builder tab without opening the object browser. If you just drag and drop into a Worksheet, then very old versions may paste in the table's DDL, but in any modern version the DnD behavior should be controlled by
- Tools > Preferences > Database > Drag and Drop
Just experiment with that. Remember to click, hold down the mouse button, then drag into the Worksheet.
Disable open object on single click in the preferences.
Many thanks to both of you.
I am more comfortable now.