code: public Where<T, ID> rawComparison(String columnName, String rawOperator, Object value) throws SQLException {
  		addClause(new SimpleComparison(columnName, findColumnFieldType(columnName), value, rawOperator));
  		return this;
  	}
docs: Make a comparison where the operator is specified by the caller. It is up to the caller to specify an appropriate
  operator for the database and that it be formatted correctly.