Good day all--
I've been using TBLFM and orgmode-lookup-first to conditionally update a table.  It works great but I've run into something that has stumped me.  Imagine I have a table like the following:
#+name: lookup_geo--------+-----+---|| T      | L   | Y ||--------+-----+---|| WEII  | SEA | 3 || WEIII | SEA | 4 || WEIII | SJC | 3 ||--------+-----+---|
|--------+-----+-------+---------------------------------|| T      | L   | Count | Cost (Count * matching Y above) ||--------+-----+-------+---------------------------------|| WEIII | SJC |     3 | #ERROR                          || WEIII | SEA |     5 | #ERROR                          ||--------+-----+-------+---------------------------------|
# the TBLFM syntax below doesn't work, it's just how I would've guessed it might.
#+TBLFM: $4=`(org-lookup-first '($1 $2) '((remote(lookup_geo,@2$1..@>$1)) (remote(lookup_geo,@2$2..@>$2))) '(remote(lookup_geo,@2$3..@>$3))))

As far as I can tell, orgmode-lookup-first allows me to match the first(T) or second(L) column but it's entirely unclear how to match both.  While I could workaround this with multiple tables (e.g. a separate named table/location and then have code dynamically generate the appropriate table name), a separate source block or a single key composed of two parts (e.g "WEII - SEA"; this is my current favorite workaround), I wondered if there might be a better solution.
I also considered whether it would make sense for the predicate to be given access to the entire matched row so something like the following could work:
    'lambda (row) (and (= $1 (car row)) (= $2 (cadr row))))
Anyhow, is there a better way to do this beyond creating a single column that combines what was two columns?
Thx.
--Brad