how to run on an imported table and pass each row as a parameter to a query(SQL server) - sql-server

Question

I have a CSV file that I load into my DB( Without using SSIS) with about 20 rows and 3 columns(as below):
**start_date_local** **end_date_local** **provider_unit**
18/04/2017 16:00 19/04/2017 16:00 501638-52973
19/04/2017 05:30 19/04/2017 23:00 501613-52345
07/04/2017 14:30 08/04/2017 15:30 201447-20266
each row/record should act as a parameter in my query (SQL server) that consist the following 'Where' clause
((Transmission.Transmission_StartDateAccurate >= '**start_date_local**')
AND (Transmission.Transmission_EndDateAccurate <= **'end_date_local'**))
AND Units.sn LIKE **'provider_unit'**
i would like to receive at my result set usage data (Which is in another table and that's fine) of each unit at its specific times - as follows:
start_date_local end_date_local provider_unit GB USAGE
18/04/2017 16:00 19/04/2017 16:00 501638-52973 35.3
19/04/2017 05:30 19/04/2017 23:00 501613-52345 42.4
07/04/2017 14:30 08/04/2017 15:30 201447-20266 4.5
please advice:)
Thanks,
Guy

Answer 1

If you are loading this data into a Staging table within your database, you can just join onto it to use the data in a set based manner, which will return your dataset for all instances.
Not having your full schema this is a bit of guess work, but you should be doing something like this:
select s.start_date_local
,s.end_date_local
,s.provider_unit
,t.GBUsage
from Transmission t
join StagingTable s
on(t.Transmission_StartDateAccurate >= s.start_date_local
and t.Transmission_EndDateAccurate <= s.end_date_local
)
join Units u
on(u.sn like s.provider_unit);