issue1391: Enable GaugeDischarge artifact to directly load a table by its ID This allows us to use the GaugeDischargeArtifact for any discharge tables that we have in our database. The name of the created facet is taken from the ids string as is also usual in the WMS artifacts.

select.abflusstafel = \
    SELECT ABFLUSSTAFEL_NR, \
           ABFLUSSTAFEL_BEZ, \
           GUELTIG_VON, \
           GUELTIG_BIS, \
           PEGELNULLPUNKT, \
           AT.BFG_ID \
    FROM ABFLUSSTAFEL AT \
    WHERE MESSSTELLE_NR LIKE :number