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            "questionFrontendId": "3054",
            "categoryTitle": "Database",
            "boundTopicId": 2653971,
            "title": "Binary Tree Nodes",
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            "translatedTitle": "二叉树节点",
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                    "name": "Database",
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            "sampleTestCase": "{\"headers\":{\"Tree\":[\"N\",\"P\"]},\"rows\":{\"Tree\":[[1,2],[3,2],[6,8],[9,8],[2,5],[8,5],[5,null]]}}",
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                "Truncate table Tree",
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                "insert into Tree (N, P) values ('3', '2')",
                "insert into Tree (N, P) values ('6', '8')",
                "insert into Tree (N, P) values ('9', '8')",
                "insert into Tree (N, P) values ('2', '5')",
                "insert into Tree (N, P) values ('8', '5')",
                "insert into Tree (N, P) values ('5', NULL)"
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