code: public List<Object> querySingleRowResults(String sql, String[] args,
  			GeoPackageDataType[] dataTypes) {
  		List<List<Object>> results = queryResults(sql, args, dataTypes, 1);
  		List<Object> singleRow = null;
  		if (!results.isEmpty()) {
  			singleRow = results.get(0);
  		}
  		return singleRow;
  	}
docs: Query for values in a single (first) row
  
  @param sql
  sql statement
  @param args
  arguments
  @param dataTypes
  column data types
  @return single row results
  @since 3.1.0