After upgrading to version 10, I cannot find how to Unselect All and Select All of the columns in the data results grid.
This feature was available in 9.7 and lower.
Starting with Toad for Oracle 10.5 and higher, please do the following:
1. In your data grid, left click on the button on the top-left hand corner, label "Click here to show/hide column"
2. Now right click on the dropdown that is displaying the columns name and select the sub-menu "check all" or "uncheck all".
ER# ST68077 has been implemented.