Dbeaver automatically puts the starting letters of the table behind the full name, if i select a table with the drop down menue and i need to know how to turn it off.
Its like this:
select * from kalibrierprotokoll_lx_punkte klp
DBeaver will create table aliases automatically.
If your table is called MySpecialTable then it will use the alias mst, if it's called kalibrierprotokoll_lx_punkte it will create klp.
That's a useful feature later, when you start joining your tables, because it will make it much easier to refer to specific fields using the alias (klp.something). It also will make autocomplete column names possible when you start typing klp..
If you must switch it off, you can do so in the Preferences, under
DBeaver → Editors → SQL Editor → SQL Completion → [x] Insert table aliases (in FROM clause)
I would leave it on.