Add Enum to a existing sql column

Question

There is an existing query to create a column with enums as shown below.

ALTER TABLE org ADD COLUMN `classify` ENUM('Arg', 'Agent') NOT NULL;

Now, I cannot modify that. I need send another query to add another value, when I try

ALTER TABLE org change `classify` ENUM('Arg', 'Agent','brand') NOT NULL;

it doesn't work.

Answer 1

Try this:

ALTER TABLE org ADD COLUMN classify_aux ENUM('Arg', 'Agent','brand') NOT NULL;

UPDATE org SET classify_aux = classify;

ALTER TABLE org DROP COLUMN classify;

ALTER TABLE org ADD COLUMN `classify` ENUM('Arg', 'Agent','brand') NOT NULL;

UPDATE org SET classify = classify_aux;

ALTER TABLE org DROP COLUMN classify_aux;