[GRASS-user] Vector attribute query errors on a Mac

[I. Syncrasy]

I'm unable to figure out how to query vector attribute tables on my Mac using
the sample North Carolina data. I'm trying to query one of the vector files
has a column "CANCER" with attributes 'yes' or 'no'.

What I'm doing:
1. Choose Vector > Query with Attributes
2. In the v.extract window that opens...
- On the Options tab I choose my input vector map and type a name for an
output vector
- On the Selection tab, in the "Where conditions of SQL statement..." field,
I type in my query, "CANCER=yes"
3. I click Run

In the output window,

I get the following error:

---------

DBMI-DBF driver error:
[...]
Column 'yes' not found
Incompatible types in WHERE condition.
Error in selecting rows
Error in db_open_select_cursor()

---------

Is there a db/SQL issue with GRASS on a Macintosh? If so, can it be fixed?
Why would it think "yes" is a column instead of an attribute?

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