Add support to count distinct rows based on multiple columns using Postgres#475

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hprange merged 2 commits intowocommunity:integrationfrom hprange:count-distinct-postgres

Sep 12, 2013

+39-7

Commits on Sep 11, 2013

Extract the construction of count distinct expression into its own method
hprange
committed
Add support to count distinct rows based on multiple columns using Postgres
hprange
committed