hpcc-systems/HPCC-Platform — pull request #2392 by ghalliday (2012-05-28 08:33:22+00:00)
Title: Significant speed up for complex SEQUENTIALS

If SEQUENTIAL statements were heavily nested they would be repeatedly
transformed - because nothing is commoned up between sequential
branches. This change adds a cache so that they ae only transformed
once. Had little effect on most queries, but a drastic (1/4 of time)
effect on a couple.

Signed-off-by: Gavin Halliday