Hi all!

I *was* very proficient with Excel back in the days when you could use
the old command macro language, but haven't really had the chance to
get up to speed with Excel and the VBA (?) based language now used -
I'm not even sure I've described that accurately. Anyway...

I've got two spreadsheets of large enough size that I'd rather not do
this process by hand. One spreadsheet is pretty much a "subset" of the
other based on a few columns, e.g. "Name", "Address", "Age". I'd like
to take a row from the "subset" spreadsheet and copy the data
corresponding to "Name", "Address", "Age", etc. and paste it into the
"master" spreadsheet. The end result would be all rows found in the
"master" with additional data found in "subset" would be updated.

Here's an abbreviated example:

MASTER SPREADSHEET
col1 col2 col3 col4
a 1 2 3
a 4 7 2
b 5 6 7
c 8 9 0

SUBSET SPREADSHEET
col1 col2 col3 col4
a 1 z y
c 8 q r

RESULTING SPREADSHEET
col1 col2 col3 col4 col5 col6
a 1 2 3 z y
c 8 9 0 q r

Does that make sense? How do I approach this? Macros? Excel database
functions which I haven't had the opportunity to play with.

Thanks for reading!
Dennis