crate/crate — pull request #1391 by mfussenegger (2014-11-24 13:00:22+00:00)
Title: add AnalyzedRelation interface and RelationVisitor

Used in the Planner and InsertFromQuery case to do dispatching to
SelectAnalyzedStatement.

For now the AnalyzedRelation is just a marker interface until more Relations
are added.