ClickHouse DB

2 pages

• 2026-09-18

  ClickHouse Notes

  uniq() SELECT uniq(*)/count(*) FROM calls Removing duplicates OPTIMIZE TABLE calls FINAL DEDUPLICATE Or on a subset of columns: OPTIMIZE TABLE calls FINAL DEDUPLICATE BY call_id;

• 2026-09-18

  ClickHouse Tutorial

  by Hamed Karbasi Tutorial https://dev.to/hoptical/clickhouse-basic-tutorial-an-introduction-52il https://dev.to/hoptical/clickhouse-basic-tutorial-table-engines-30i1 https://dev.to/hoptical/clickhouse-basic-tutorial-keys...