This is getting quite off-topic, but:
The meta data (except for the timestamp) is never stored in that; see https://www.thethingsnetwork.org/forum/t/how-to-retrieve-metadata-from-data-storage-integration/19259/2
See also https://www.thethingsnetwork.org/forum/t/access-metadata-in-decoder/19118, and https://www.thethingsnetwork.org/docs/applications/integrations.html