DROP TABLE IF EXISTS file; CREATE TABLE file (x UInt64) ENGINE = File(TSV, 'data1.tsv.br'); TRUNCATE TABLE file; INSERT INTO file SELECT * FROM numbers(1000000); SELECT count(), max(x) FROM file; DROP TABLE file; CREATE TABLE file (x UInt64) ENGINE = File(TSV, 'data2.tsv.gz'); TRUNCATE TABLE file; INSERT INTO file SELECT * FROM numbers(1000000); SELECT count(), max(x) FROM file; DROP TABLE file; SELECT count(), max(x) FROM file('data{1,2}.tsv.{gz,br}', TSV, 'x UInt64'); -- check that they are compressed SELECT count() < 1000000, max(x) FROM file('data1.tsv.br', RowBinary, 'x UInt8', 'none'); SELECT count() < 3000000, max(x) FROM file('data2.tsv.gz', RowBinary, 'x UInt8', 'none');