Double Property with Nan not working with MariaDB

Created by: Timm Fitschen

Apparently, MariaDB does not handle Double NaN just as MySQL. Fix and test necessary.

Fix

Imported comments:

By Henrik tom Wörden on 2019-11-18T11:19:19.100Z

closed

By Henrik tom Wörden on 2019-11-18T11:19:05.227Z

unassigned @henrik_indiscale

By Henrik tom Wörden on 2019-11-18T11:18:27.814Z

marked the task @henrik_indiscale as completed

By Timm Fitschen on 2019-10-01T21:57:27.134Z

changed the description

By Timm Fitschen on 2019-10-01T21:51:21.650Z

assigned to @henrik_indiscale

By Timm Fitschen on 2019-10-01T21:46:39.184Z

mentioned in commit a034e7a4

By Timm Fitschen on 2019-10-01T20:09:46.308Z

changed due date to October 02, 2019

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