The only thing I really miss from HeidiSQL is the quick filter creation, which I use a lot. When you right click on any data-view cell a "Quick filter" sub-menu item is available, that allows you to apply a filter based on that selection (using value from selection, clipboard or prompt). DBeaver already has a great filter feature, so basically this will be a shorthand for filter definition!
Here is a screenshot taken right clicking a cell containing value "9" from column named "category", with text "123" present in my system clipboard:

As you can see, I have lot of options to instantly create a filter. First group creates different filters from selected value, third group prompt me for value and third group take it from clipboard.