Amend trigger function Additional column names given as arguments to the trigger function will be tested for equality along with the geometry. This allows to implement behavior similar to a multi-column unique constraint (in preparation to store historic versions of axis segments with differing temporal validity). Using EXISTS instead of the aggregate should be more efficient.

teichmann@intevation.de = sascha.teichmann@intevation.de
bernhard.reiter@intevation.de = bernhard@intevation.de