DROP TABLE IF EXISTS mutations_and_escaping_1648; CREATE TABLE mutations_and_escaping_1648 (d Date, e Enum8('foo'=1, 'bar'=2)) Engine = MergeTree(d, (d), 8192); INSERT INTO mutations_and_escaping_1648 (d, e) VALUES ('2018-01-01', 'foo'); INSERT INTO mutations_and_escaping_1648 (d, e) VALUES ('2018-01-02', 'bar'); -- slow mutation ALTER TABLE mutations_and_escaping_1648 UPDATE e = CAST('foo', 'Enum8(\'foo\' = 1, \'bar\' = 2)') WHERE d='2018-01-02' and sleepEachRow(1) = 0; -- check that we able to read mutation text after serialization DETACH TABLE mutations_and_escaping_1648; ATTACH TABLE mutations_and_escaping_1648; ALTER TABLE mutations_and_escaping_1648 UPDATE e = CAST('foo', 'Enum8(\'foo\' = 1, \'bar\' = 2)') WHERE d='2018-01-02' SETTINGS mutations_sync = 1; SELECT e FROM mutations_and_escaping_1648 ORDER BY d; DROP TABLE mutations_and_escaping_1648;