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USE master
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BACKUP DATABASE pubs TO testBack
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SELECT id,ip,from_unixtime(last_task_request_time) t1, from_unixtime(last_task_finish_time) t2
from yq_nodemanage
WHERE node_type=1
ORDER BY t1 DESC;
SELECT sum(unix_timestamp(gather_time)-unix_timestamp(publish_time))/(count(*)*60) from yq_bbs_docinfo
WHERE unix_timestamp(publish_time)>un ......
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