SQL Server：如何使用distinct将这两个查询合并在一起

Question

I have a query that gets a list of distinct deviceID's, now I want to join that query with another query that has an inner join.

This is my first query

Select distinct deviceid 
from session 
where cast(createdon as date) between '01/01/2018' and '01/30/2018' 
  and len(deviceid) > 10

That query returns the distinct DeviceId's I need. I now want to use that DeviceID from that query and replace it with the DeviceID in this query

Second query:

select f.PracticeID, F.Name, D.DeviceID, d.SerialNumber 
from device d
inner join facility f on f.id = d.locationid
inner join session s on s.deviceid = d.deviceid 
where d.deviceID = 'deviceID'

How can I merge those 2? I want to get the results from 1st query and use it for the 2nd query DeviceID column. Right now I am manually executing the DeviceID in the second query that I get from the first. I am using SQL Server 2012

Answer 1

You want to get all the data from the second query for the distinct DeviceID from the first one? This should do it.

select f.PracticeID,F.Name,D.DeviceID,d.SerialNumber from device d
inner join facility f on f.id=d.locationid
inner join session s on s.deviceid=d.deviceid 
where d.deviceID in (
     Select distinct deviceid from session where cast(createdon as date) between 
     '01/01/2018' and '01/30/2018' and len(deviceid)>10
)

Answer 2

You can use a sub query to achieve this :-

select f.PracticeID,F.Name,D.DeviceID,d.SerialNumber from ( Select distinct deviceid from session where cast(createdon as date) between 
'01/01/2018' and '01/30/2018' and len(deviceid)>10) d
inner join facility f on f.id=d.locationid
inner join session s on s.deviceid=d.deviceid 
where d.deviceID='deviceID'