Thank you @yubiuser and @deHakkelaar - this worked as intended:
sqlite3 /etc/pihole/pihole-FTL.db "DELETE from query_storage where client in (SELECT id from client_by_id where ip like '10.97.209')"
systemctl restart pihole-FTL
Thank you @yubiuser and @deHakkelaar - this worked as intended:
sqlite3 /etc/pihole/pihole-FTL.db "DELETE from query_storage where client in (SELECT id from client_by_id where ip like '10.97.209')"
systemctl restart pihole-FTL