Hey John,

I'm a bit confused as to how NULLs in csv files are treated by ardea.
Here is an experiment I just did:

in "nulls.csv":

10,1
20,
30,3

then load the data with ardea:

ardea -d tmp/nulls_test -m a:int,b:int -t nulls.csv

then query with ibis:

ibis.sh -d tmp/nulls_test -q 'SELECT a, b WHERE 1 = 1' -o out.txt

cat out.txt
10, 1
30, 3

For some reason the csv row with a NULL in it is ignored by ardea.
This is unexpected for me, but I'm wondering if this is working as
designed or not. If this is expected behaviour, then I'm wondering how
I can specify NULL values when loading data.

Thanks,

Michael
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