Snowflake(@Snowflake):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: https://t.co/DXaFwZy3AV

Snowflake

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Snowflake@Snowflake

2026.08.06 23:00

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: