{
    "1": {
        "method": "createTable",
        "params": [
            {
                "name": "nexus_invoice_tracker",
                "columns": {
                    "member_id": {
                        "name": "member_id",
                        "type": "BIGINT",
                        "length": "20",
                        "decimals": null,
                        "values": null,
                        "allow_null": false,
                        "default": null,
                        "comment": "ID Number",
                        "unsigned": true,
                        "auto_increment": false
                    },
                    "invoice_id": {
                        "name": "invoice_id",
                        "type": "BIGINT",
                        "length": null,
                        "decimals": null,
                        "values": null,
                        "allow_null": false,
                        "default": null,
                        "comment": "",
                        "unsigned": true,
                        "auto_increment": false
                    }
                },
                "indexes": {
                    "PRIMARY": {
                        "type": "primary",
                        "name": "PRIMARY",
                        "columns": [
                            "member_id",
                            "invoice_id"
                        ],
                        "length": [
                            null,
                            null
                        ]
                    }
                }
            }
        ]
    },
    "2": {
        "method": "changeColumn",
        "params": [
            "nexus_support_fields",
            "sf_max_input",
            {
                "name": "sf_max_input",
                "type": "MEDIUMINT",
                "length": 6,
                "decimals": null,
                "values": [],
                "allow_null": false,
                "default": "0",
                "comment": "",
                "unsigned": false,
                "auto_increment": false
            }
        ]
    },
    "3": {
        "method": "delete",
        "params": [
            "nexus_alternate_contacts",
            [
                "main_id = alt_id"
            ]
        ]
    }
}