I want to filter out the output without rows containing null values or blank columns. I am using Sql server 2012 there is no option named \'Blank\' as in SS
Edit the SQL query, so that it will not return NULL values in the column to group on, but let it return a dummy value; for example: ISNULL(columnA, 'dummy')
In the column group definition add a filter: ColumnA <> 'dummy'.