在mongodb嵌套数组中搜索

Question

这里我有这个数据库

rejectattr

我用它作为查询来获取我想要的对象

{
    "products": [
        [
            {
                "title": "CS:GO:0",
                "description": "500 x 6MM CARBON STEEL BALL BEARINGS",
                "moreInfo": "SMK.",
                "oldPrice": "269.99",
                "newPrice": "109.99",
                "offPrice": "59%",
                "image": "",
                "z-index": 0,
                "shown": true,
                "type": "product",
                "category": "0",
                "id": "0"
            },
            {
                "title": "Grid autosport",
                "description": "G&P G&P Tokyo Marui M870 Gas Charging...",
                "moreInfo": "",
                "oldPrice": "",
                "newPrice": "129.99",
                "offPrice": "",
                "image": "",
                "z-index": 1,
                "shown": true,
                "type": "product",
                "category": "0",
                "id": "1"
            }
        ],
        [
            {
                "title": "CS:GO:0",
                "description": "500 x 6MM CARBON STEEL BALL BEARINGS",
                "moreInfo": "SMK.",
                "oldPrice": "269.99",
                "newPrice": "109.99",
                "offPrice": "59%",
                "image": "",
                "z-index": 0,
                "shown": true,
                "type": "product",
                "category": "1",
                "id": "0"
            },
            {
                "title": "Grid autosport",
                "description": "G&P G&P Tokyo Marui M870 Gas Charging...",
                "moreInfo": "",
                "oldPrice": "",
                "newPrice": "129.99",
                "offPrice": "",
                "image": "",
                "z-index": 1,
                "shown": true,
                "type": "product",
                "category": "1",
                "id": "1"
            }
        ].........

数据库返回null array []。

有人知道为什么以及如何从中获取我想要的对象？