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<default>
<!-- Maximum memory usage for processing single query, in bytes. -->
<max_memory_usage>40000000000</max_memory_usage>
<empty_result_for_aggregation_by_empty_set>1</empty_result_for_aggregation_by_empty_set>
<!-- Use cache of uncompressed blocks of data. Meaningful only for processing many of very short queries. -->
<use_uncompressed_cache>1</use_uncompressed_cache>
<allow_experimental_data_skipping_indices>1</allow_experimental_data_skipping_indices>
<prefer_localhost_replica>0</prefer_localhost_replica>
<!-- <max_block_size>1000000</max_block_size> -->
<load_balancing>random</load_balancing>
</default>
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You must set the setting `allow_experimental_data_skipping_indices` to 1 before using data skipping indices. (version 19.14.7.15 (official build))
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DB::Exception: Data directory for table already containing data parts - probably it was unclean DROP table or manual intervention. You must either clear directory by hand or use ATTACH TABLE instead of CREATE TABLE if you need to use that parts.