The current queryEncode interface does not support looking for results which bear a "NA" value.
A typical use-case would be trying to retrieve all results which have not been subjected to any treatment, and hence where the treatment column has value NA.
The current queryEncode interface does not support looking for results which bear a "NA" value.
A typical use-case would be trying to retrieve all results which have not been subjected to any treatment, and hence where the treatment column has value NA.