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Fehler (db_query): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'OR tab_bilder.Referenz1 = OR tab_bilder.Referenz2 =...' at line 4
(SELECT * FROM tab_bilder WHERE tab_bilder.Bild_Name = OR tab_bilder.Referenz1 = OR tab_bilder.Referenz2 = OR tab_bilder.Referenz3 = )