php - mysql merge two queries, get count of each value from two seperate columns? -

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$accepteventcount = mysql_query("select count(*) count, tbldevices.name, tblevents.sentdeviceid tbldevices,tblevents tbldevices.deviceid = tblevents.sentdeviceid group tblevents.sentdeviceid order count desc");  $declineeventcount = mysql_query("select count(*) cnt, tbldevices.name, tbldeclinedevents.deviceid tbldevices,tbldeclinedevents  tbldevices.deviceid = tbldeclinedevents.deviceid group tbldeclinedevents.deviceid order cnt desc");

i'm new merging 2 queries in php mysql. tried unions i'm not able desired result.

basically want count of accepted events , declined events of devices table tbldevices. 3 tables involved here. can me this?

this tried! 

select count() count, tbldevices.deviceid,null,tblevents.sentdeviceid tblevents,tbldevices  tblevents.sentdeviceid = tbldevices.deviceid  group tblevents.sentdeviceid   union   select count() cnt,tbldevices.deviceid,tbldeclinedevents.deviceid,null  tbldevices,tbldeclinedevents  tbldeclinedevents.deviceid = tbldevices.deviceid  group tbldeclinedevents.deviceid

i think not possible (at least without using sub query). reason group needs done on fields, accepted , declined events not identified field tables.

if can't modified table structure, having 2 queries reasonable options. if can change table structure, recommend adding column store validation status.


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