-- Tags: no-parallel, no-random-merge-tree-settings DROP TABLE IF EXISTS codecs; CREATE TABLE codecs (id UInt32, val UInt32, s String) ENGINE = MergeTree ORDER BY id SETTINGS min_rows_for_wide_part = 10000; INSERT INTO codecs SELECT number, number, toString(number) FROM numbers(1000); SELECT sum(data_compressed_bytes), sum(data_uncompressed_bytes) FROM system.parts WHERE table = 'codecs' AND database = currentDatabase(); SELECT sum(id), sum(val), max(s) FROM codecs; DETACH TABLE codecs; ATTACH table codecs; SELECT sum(id), sum(val), max(s) FROM codecs; DROP TABLE codecs; CREATE TABLE codecs (id UInt32 CODEC(NONE), val UInt32 CODEC(NONE), s String CODEC(NONE)) ENGINE = MergeTree ORDER BY id SETTINGS min_rows_for_wide_part = 10000; INSERT INTO codecs SELECT number, number, toString(number) FROM numbers(1000); SELECT sum(data_compressed_bytes), sum(data_uncompressed_bytes) FROM system.parts WHERE table = 'codecs' AND database = currentDatabase(); SELECT sum(id), sum(val), max(s) FROM codecs; DETACH TABLE codecs; ATTACH table codecs; SELECT sum(id), sum(val), max(s) FROM codecs; DROP TABLE codecs; CREATE TABLE codecs (id UInt32, val UInt32 CODEC(Delta, ZSTD), s String CODEC(ZSTD)) ENGINE = MergeTree ORDER BY id SETTINGS min_rows_for_wide_part = 10000; INSERT INTO codecs SELECT number, number, toString(number) FROM numbers(1000); SELECT sum(data_compressed_bytes), sum(data_uncompressed_bytes) FROM system.parts WHERE table = 'codecs' AND database = currentDatabase(); SELECT sum(id), sum(val), max(s) FROM codecs; DETACH TABLE codecs; ATTACH table codecs; SELECT sum(id), sum(val), max(s) FROM codecs; DROP TABLE codecs;