[mysql] Generate GUID in MySQL for existing Data?

// UID Format: 30B9BE365FF011EA8F4C125FC56F0F50
UPDATE `events` SET `evt_uid` = (SELECT UPPER(REPLACE(@i:=UUID(),'-','')));

// UID Format: c915ec5a-5ff0-11ea-8f4c-125fc56f0f50
UPDATE `events` SET `evt_uid` = (SELECT UUID());

// UID Format: C915EC5a-5FF0-11EA-8F4C-125FC56F0F50
UPDATE `events` SET `evt_uid` = (SELECT UPPER(@i:=UUID()));

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