code: public <T> List<T> querySingleColumnTypedResults(String sql, String[] args) {
  		@SuppressWarnings("unchecked")
  		List<T> result = (List<T>) querySingleColumnResults(sql, args);
  		return result;
  	}
docs: Query for values from the first column
  
  @param <T>
  result value type
  @param sql
  sql statement
  @param args
  sql arguments
  @return single column values
  @since 3.1.0