{
    "1": {
        "method": "changeColumn",
        "params": [
            "core_attachments",
            "attach_filesize",
            {
                "name": "attach_filesize",
                "type": "BIGINT",
                "length": 10,
                "decimals": null,
                "values": [],
                "allow_null": false,
                "default": 0,
                "comment": "",
                "unsigned": false,
                "auto_increment": false
            }
        ]
    }
}