Orders the result set by a given field.
If called multiple times, the query will order by each specified field in the order this method is called.
If the query uses DISTINCT or GROUP BY conditions, fields or expressions that are used for the order must be selected. Additionally, when ordering on an alias, the alias must be added before orderBy() is called.
$field: The field on which to order.
$direction: The direction to sort. Legal values are "ASC" and "DESC". Any other value will be converted to "ASC".
SelectQueryInterface: The called object.
database/ select.inc, line 773
- The base extender class for Select queries.