Deep dives on real-time analytics, ClickHouse, Apache Druid, and data migrations.https://rohithreddykota.com/en-ushttps://rohithreddykota.com/blog/bigquery-hll-sketches-to-clickhouse-uniqcombined64/https://rohithreddykota.com/blog/bigquery-hll-sketches-to-clickhouse-uniqcombined64/How I converted BigQuery’s ZetaSketch HLL++ sketches into ClickHouse uniqCombined64 states by transplanting the registers directly: no rehashing, no raw rows, and counts within HLL’s own noise.Mon, 28 Sep 2026 00:00:00 GMTClickHouseBigQueryHyperLogLogData MigrationRustRohith Reddy Kota