Method addOrderBy

src/java/simpledb/optimizer/LogicalPlan.java:215–220

Add an ORDER BY expression in the specified order on the specified field. SimpleDb only supports a single ORDER BY field. @param field the field to order by @param asc true if should be ordered in ascending order, false for descending order @throws ParsingException

(String field, boolean asc)

     * @throws ParsingException 
    */
    public void addOrderBy(String field, boolean asc) throws ParsingException {
        field=disambiguateName(field);
        oByField = field;
        oByAsc = asc;
        hasOrderBy = true;
    }

    /** Given a name of a field, try to figure out what table it belongs to by looking
     *   through all of the tables added via {@link #addScan}.