memos/store/migration/mysql/0.24/00__memo.sql

-- Drop deprecated tags column.
ALTER TABLE `memo` DROP COLUMN `tags`;

-- Add pinned column.
ALTER TABLE `memo` ADD COLUMN `pinned` BOOLEAN NOT NULL DEFAULT FALSE;

-- Update pinned column from memo_organizer.
UPDATE `memo`
SET `pinned` = TRUE
FROM `memo_organizer`
WHERE `memo`.`id` = `memo_organizer`.`memo_id` AND `memo_organizer`.`pinned` = 1;