sql server - SQL - Query Join result is empty even though there are data in one of the tables -


i have 2 tables named tnetworksocket , tpatchpanelports use filter data.
have data when execute select * tpatchpanelports but, when select * tnetworksocket there no data. correct.
if execute 

select distinct hostid, hostname, hosttypeid, domainname  thosts, tdomains, tpatchpanelports, tnetworksocketport  thosts.domainid=tdomains.domainid  , ( tpatchpanelports.connectedhostid = thosts.hostid or tnetworksocketport.connectedhostid = thosts.hostid) , accountid=1

i no data, if remove tnetworksocketport query looks like:

select distinct hostid, hostname, hosttypeid, domainname  thosts, tdomains, tpatchpanelports  thosts.domainid=tdomains.domainid  , ( tpatchpanelports.connectedhostid = thosts.hostid) , accountid=1

i data.

what missing

re-writing query explicit join syntax , table have used left join, may you

select distinct hostid, hostname, hosttypeid, domainname  thosts inner join tdomains on thosts.domainid=tdomains.domainid  inner join tpatchpanelports on tpatchpanelports.connectedhostid = thosts.hostid left join tnetworksocketport on tnetworksocketport.connectedhostid = thosts.hostid accountid=1

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