hpcc-systems/HPCC-Platform — pull request #1213 by ghalliday (2012-01-11 15:18:59+00:00)
Title: Bug94798 Improve sort order tracking for keyed join

Improve tracking for JOIN(A,myKey,LEFT.x=RIGHT.x,TRANSFORM(RIGHT))
- If A was sorted by x then the result of the join is also sorted by x
even through the transform value is RIGHT.x
Can cause SORTS to be removed, or global->local (from distributions)

Signed-off-by: Gavin Halliday