tree fa517bd1d338bc10b112cb3fe9beddacab469908
parent 5b2bb00ce562e6dfcf8ddfbd8461541315750f81
author Till Westmann <westmann@gmail.com> 1398900559 -0700
committer Till Westmann <westmann@gmail.com> 1399396107 -0700

optimization for disjunctive selection predicates
- add rule to rewrite a disjunction of eq-comparisons on the
  same variable in a selection to a join