Filtering a column

Hi,

A.I want to filter column where rows doesn't contain any values(i.e blank), and rows contain some value(i.e values might be anything if rows contain value it should not get filter, if rows doesn't contain value that has to be get filter) presently I am using oTable.fnfilter("",columnindex).please keep me in getting this issue resloved.

B.I want to edit my existing table if my condition match for that How to get my datatable individual row to edit for oTable.