007_add_field_parent_id.json

{
    "databaseChangeLog": [
        {
            "changeSet": {
                "id": "7",
                "author": "cammsaul",
                "changes": [
                    {
                        "addColumn": {
                            "tableName": "metabase_field",
                            "columns": [
                                {
                                    "column": {
                                        "name": "parent_id",
                                        "type": "int",
                                        "constraints": {
                                            "nullable": true,
                                            "references": "metabase_field(id)",
                                            "foreignKeyName": "fk_field_parent_ref_field_id"
                                        }
                                    }
                                }
                            ]
                        }
                    }
                ]
            }
        }
    ]
}