SET max_block_size = 1000; SELECT groupUniqArray(blockSize()), uniqExact(rowNumberInAllBlocks()), min(rowNumberInAllBlocks()), max(rowNumberInAllBlocks()), uniqExact(rowNumberInBlock()), min(rowNumberInBlock()), max(rowNumberInBlock()), uniqExact(blockNumber()) FROM (SELECT * FROM system.numbers_mt LIMIT 100000);