{
    "1": {
        "method": "dropTable",
        "params": [
            "forums_question_ratings",
            true
        ]
    },
    "2": {
        "method": "dropTable",
        "params": [
            "forums_answer_ratings",
            true
        ]
    },
    "3": {
        "method": "dropColumn",
        "params": [
            "forums_topics",
            "topic_rating_total"
        ]
    },
    "4": {
        "method": "dropColumn",
        "params": [
            "forums_topics",
            "topic_rating_hits"
        ]
    },
    "5": {
        "method": "dropColumn",
        "params": [
            "forums_topics",
            "question_rating"
        ]
    },
    "6": {
        "method": "dropColumn",
        "params": [
            "forums_forums",
            "forum_allow_rating"
        ]
    },
    "7": {
        "method": "dropColumn",
        "params": [
            "forums_forums",
            "qa_rate_questions"
        ]
    },
    "8": {
        "method": "dropColumn",
        "params": [
            "forums_forums",
            "qa_rate_answers"
        ]
    },
    "9": {
        "method": "createTable",
        "params": [
            {
                "name": "forums_topics_children",
                "columns": {
                    "topic_id": {
                        "name": "topic_id",
                        "type": "BIGINT",
                        "length": "20",
                        "decimals": null,
                        "values": null,
                        "allow_null": false,
                        "default": 0,
                        "comment": "ID Number",
                        "unsigned": true,
                        "auto_increment": false
                    },
                    "parent_topic": {
                        "name": "parent_topic",
                        "type": "BIGINT",
                        "length": null,
                        "decimals": null,
                        "values": null,
                        "allow_null": true,
                        "default": null,
                        "comment": "",
                        "unsigned": true,
                        "auto_increment": false
                    },
                    "sequence": {
                        "name": "sequence",
                        "type": "SMALLINT",
                        "length": null,
                        "decimals": null,
                        "values": null,
                        "allow_null": true,
                        "default": null,
                        "comment": "",
                        "unsigned": true,
                        "auto_increment": false
                    }
                },
                "indexes": {
                    "PRIMARY": {
                        "type": "primary",
                        "name": "PRIMARY",
                        "columns": [
                            "topic_id"
                        ],
                        "length": [
                            null
                        ]
                    },
                    "parent_topic": {
                        "type": "key",
                        "name": "parent_topic",
                        "columns": [
                            "parent_topic",
                            "sequence"
                        ],
                        "length": [
                            null,
                            null
                        ]
                    }
                }
            }
        ]
    }
}