Snowflake
@Snowflake
The AI Data Cloud where data does more, and proud to be the Official Data Collaboration Provider for LA28 and Team USA.
Joined June 2014
1.2K Following 64.5K Followers
Need “about 497K unique users” faster than an exact COUNT(DISTINCT)?
Postgres gives you a few options: TABLESAMPLE, HyperLogLog and mergeable sketches.
The trick is knowing when each approximation works and where it breaks. Dive into this walkthrough:
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