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join:
select a.serverid,c.serverip,a.filename,b.callernumber,b.callednumber,b.createtime,b.releasetime
from dbo.AGENTRECFILE as a
inner join dbo.COLOG as b
on a.coid=b.coid
inner join dbo.DEVICECFG as c
on a.serverid=c.serverid
where b.callernumber='xxx' or b.callednumber='xxx'
order by b.createtime asc

other:
from dbo.AGENTRECFILE a,dbo.COLOG b,dbo.DEVICECFG c
where a.coid=b.coid and a.serverid=c.serverid and (b.callernumber='xxx' or b.callednumber='xxx')
order by b.createtime asc

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