2019-04-02 12:51:31 +00:00
|
|
|
SET send_logs_level = 'none';
|
|
|
|
|
2019-06-07 15:41:24 +00:00
|
|
|
DROP TABLE IF EXISTS delta_codec_for_alter;
|
|
|
|
CREATE TABLE delta_codec_for_alter (date Date, x UInt32 Codec(Delta), s FixedString(128)) ENGINE = MergeTree ORDER BY tuple();
|
|
|
|
SELECT compression_codec FROM system.columns WHERE database = currentDatabase() AND table = 'delta_codec_for_alter' AND name = 'x';
|
|
|
|
ALTER TABLE delta_codec_for_alter MODIFY COLUMN x Codec(Delta, LZ4);
|
|
|
|
SELECT compression_codec FROM system.columns WHERE database = currentDatabase() AND table = 'delta_codec_for_alter' AND name = 'x';
|
|
|
|
ALTER TABLE delta_codec_for_alter MODIFY COLUMN x UInt64 Codec(Delta, LZ4);
|
|
|
|
SELECT compression_codec FROM system.columns WHERE database = currentDatabase() AND table = 'delta_codec_for_alter' AND name = 'x';
|
|
|
|
DROP TABLE IF EXISTS delta_codec_for_alter;
|