* Creates a new CQLRelation with the specified base relation.
* Typical base relations include the usual six ordering relations
* (<TT><=</TT>, <TT>></TT>, <I>etc.</I>), the text
* Creates a new CQLRelation with the specified base relation.
* Typical base relations include the usual six ordering relations
* (<TT><=</TT>, <TT>></TT>, <I>etc.</I>), the text