[
  {
    "type": "alter_table",
    "description": "Add nullable message column to scheduleSwapRequests so the initiator's optional note is persisted and shown to the coworker and manager",
    "database": "{{store}}",
    "check_query": "SHOW COLUMNS FROM scheduleSwapRequests LIKE 'message'",
    "sql": "ALTER TABLE `scheduleSwapRequests` ADD COLUMN `message` varchar(500) DEFAULT NULL COMMENT 'Optional note from initiator to coworker' AFTER `status`"
  }
]