SELECTMAX( gp.id ) AS id,gp.rsv2
FROM(SELECT MAX( id ) AS id, rsv2 FROM device_data GROUP BY rsv2 ) gp
WHEREgp.id < (SELECT MAX( id ) AS id FROM device_data GROUP BY rsv2 ORDER BY id DESC LIMIT 1 )
GROUP BYgp.rsv2
ORDER BYgp.id DESC LIMIT 1
SELECTMAX( gp.id ) AS id,gp.rsv2
FROM(SELECT MAX( id ) AS id, rsv2 FROM device_data GROUP BY rsv2 ) gp
WHEREgp.id < (SELECT MAX( id ) AS id FROM device_data GROUP BY rsv2 ORDER BY id DESC LIMIT 1 )
GROUP BYgp.rsv2
ORDER BYgp.id DESC LIMIT 1
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