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lang-sql
create unique index IX_DD635956 ...statement throws the error and not something else?SHOW CREATE TABLE Lock_ ;output in the question.) Also add the specific version (mysql or percona) that gives you this error.ALTER TABLE ENGINE=MyISAMand there you have the error. Oh, I've seen the error message, I am wrong.'utf8mb4'. I don't have Percona to test right now but they are either not showing the code that produces the error or something is fishy is going on.