I checked the DBeaver shortcuts docs page and Googled a lot but couldn't find any info on this...
Does DBeaver have a Ctrl+D equivalent (I am referring to Ctrl+D in VS Code, where it multi-selects by adding the current selection)?
Background
I work with BigQuery a lot, and in BigQuery Console and VS Code they both have the Ctrl+D functionality but not in DBeaver (at least not by default with the same hotkey)
DBeaver does not come with this functionality working by default, but you can very easily add this shortcut yourself with the following 4 steps:
On the top context menu, click Window -> Preferences. Then select User Interface -> Keys.
The command you want to add a binding to is the Multi selection down relative to anchor selection. So, on the filter text box, write multi. Select it, then on the bottom pane select the Binding text box, and press the shortcut keys down (In this case, press Ctrl+D).
Make sure that the When column changes to Editing Text. Otherwise, change this yourself. It will look like the iamge below 
The Ctrl+D shortcut is already taken by the "Delete Line" command, so you need to unbind them. On the filter textbox, write ctrl+d. Then click on row that shows Delete Line, and click the Unbind Command button.
Click Apply and Close and have fun.