I'm creating dashboards for client and find out interesting thing
After creating SQL query table widget, I got this kind of alert and auto logout from admin
SELECT LogAction, LogDescription, LogUsername, LogDate
WHERE LogAction = 'Authentication'
ORDER BY LogDate DESC
in FireHouse query work fine
After adding this SQL query widget not possible enter to Menu where this widget created, because Dashboards is default page in menu(always auto logout).
If this widget is added from Settings => Editing => Dashboards, then possible to delete this widget, but if this is personal widget the only way I found, manually delete row from SQL table DashboardWidget.