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These settings are available in system.merge_tree_settings and are autogenerated from ClickHouse source.

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materialize_skip_indexes_on_merge

When enabled, merges build and store skip indices for new parts. Otherwise they can be created/stored by explicit MATERIALIZE INDEX or during INSERTs. See also exclude_materialize_skip_indexes_on_merge for more fine-grained control.

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materialize_statistics_on_merge

When enabled, merges will build and store statistics for new parts. Otherwise they can be created/stored by explicit MATERIALIZE STATISTICS or during INSERTs

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materialize_ttl_recalculate_only

Only recalculate ttl info when MATERIALIZE TTL
Last modified on July 22, 2026