Scalable Uniques in Postgres - HyperLogLog

Postgres is great as an OLTP database, but for certain activities can create some heartburn - cuch as when calculating uniques across millions of records. The extensions model allows for a lot of flexibility for Postgres going beyond simply relational SQL. One such extension is postgresql-hll based on the HyperLogLog paper which we'll highlight here.
Length: 12:29
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Recorded on 2013-09-16 at Postgres Open
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