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pg_clickhouse v0.10 brings subquery pushdown and major TPC-H query speedups

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ClickHouse has released version 0.10 of pg_clickhouse, its PostgreSQL integration extension. The update introduces subquery pushdown, a feature that allows complex queries to be executed more efficiently by delegating subquery processing to ClickHouse. According to ClickHouse, the improvement results in TPC-H benchmark queries running up to 1000 times faster. The release details were published on the ClickHouse blog in July 2026.

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pg_clickhouse v0.10 brings subquery pushdown and major TPC-H query speedups · ShortSingh