Snowflake
@Snowflake
The AI Data Cloud where data does more, and proud to be the Official Data Collaboration Provider for LA28 and Team USA.
가입 June 2014
1.2K 팔로잉 중 64.5K 팬
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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