{
  "name": "12_create_employees_table",
  "operations": [
    {
      "create_table": {
        "name": "employees",
        "comment": "This is a comment for the employees table",
        "columns": [
          {
            "name": "id",
            "type": "serial",
            "pk": true
          },
          {
            "name": "role",
            "type": "varchar(255)",
            "comment": "This is a comment for the role column"
          }
        ]
      }
    }
  ]
}