Question

I am doing two inner joins:

use SalesDWH
go


select COUNT([specimen id])  as [count],[practice name],qlmlismapping.[mlis practice id],[practice code],[Requesting Physician]
from quicklabdump a
inner join qlmlismapping b
on (b.[quiklab practice code] = a.[practice code])
inner join PracticeandPhysician c
on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME)
where [DATE entered] between '12/1/2011' and '12/31/2011'
group by quicklabdump.[practice name],qlmlismapping.[mlis practice id],[practice code],[Requesting Physician]
order by [count] desc

and getting this error:

Msg 4104, Level 16, State 1, Line 10
The multi-part identifier "quicklabdump.practice name" could not be bound.
Msg 4104, Level 16, State 1, Line 10
The multi-part identifier "qlmlismapping.mlis practice id" could not be bound.
Msg 4104, Level 16, State 1, Line 3
The multi-part identifier "qlmlismapping.mlis practice id" could not be bound.

What am I doing wrong? Is the join incorrect?

Answer 1

Use the same aliases as your JOIN

select 
       COUNT([specimen id]) as [count],
       [practice name],
       b.[mlis practice id],
       [practice code],
       [Requesting Physician]
from 
     quicklabdump a
     inner join 
     qlmlismapping b on (b.[quiklab practice code] = a.[practice code])
     inner join 
     PracticeandPhysician c on (a.[Requesting Physician]=c.doctorfirstname+' '+c.DOCTORLASTNAME)
where 
     [DATE entered] between '12/1/2011' and '12/31/2011'
group by 
     a.[practice name], 
     b.[mlis practice id],
     [practice code],
     [Requesting Physician]
order by 
     [count] desc

Some notes though

• qualify all columns
• use meaningful aliases (qld, qlm, pap etc)
• use ISO dates yyyymmdd
• Try to use column names without spaces