DROP TABLE IF EXISTS src_table;
DROP TABLE IF EXISTS copied_table;

CREATE TABLE src_table
(
    time DateTime('UTC') DEFAULT fromUnixTimestamp(sipTimestamp),
    sipTimestamp UInt64
)
ENGINE = MergeTree
ORDER BY time;

INSERT INTO src_table(sipTimestamp) VALUES (toUnixTimestamp(toDateTime('2024-05-20 09:00:00', 'UTC')));

CREATE TABLE copied_table AS src_table;

ALTER TABLE copied_table RENAME COLUMN `sipTimestamp` TO `timestamp`;

SHOW CREATE TABLE src_table;

SELECT name, default_expression FROM system.columns WHERE database = currentDatabase() AND table = 'src_table' ORDER BY name;
INSERT INTO src_table(sipTimestamp) VALUES (toUnixTimestamp(toDateTime('2024-05-20 09:00:00', 'UTC')));

SELECT * FROM src_table ORDER BY time FORMAT JSONEachRow;
SELECT * FROM copied_table ORDER BY time FORMAT JSONEachRow;

DROP TABLE src_table;
DROP TABLE copied_table;