hpcc-systems/HPCC-Platform — pull request #4036 by richardkchapman (2013-03-01 16:21:38+00:00)
Title: HPCC-8895 DICTIONARY should feep first row with a given key

For consistency with dedup, lookup join, and others, it would make a lot more
sense to keep the first matching record when multiple records with the same
key are added to a dictionary (rather than the last as at present).

Signed-off-by: Richard Chapman