tree cd029bdade6301c9d3ab227ebe5c6664b293bb37
parent 612e103cb590a8f7735c5e7af7529c4c68956bbf
author Zuyu Zhang <zuyu@cs.wisc.edu> 1524089734 -0500
committer Zuyu Zhang <zuyu@cs.wisc.edu> 1524720269 -0500

Added the an optimization rule

that eliminates a Physical node with an empty TableReference into
a Selection w/ an temp TableReference.