Sql Couchbase查询以获取嵌套级别属性的数据&；创建索引

如何在java中查询couchbase n1ql中的嵌套文档值

文档值是一个对象（人），其属性类型为1个对象（地址）列表

Address对象具有多个属性，如city、zipCode等

如何编写查询以查找基于最低级别（如city或zipCode）的匹配记录

下面是一个示例文档结构，所有文档都具有类似的结构

{
    companyName: "ABC Inc",
    companyId: 123,
    persons: [
        {
          "name": "John Smith",
          "address": [
                {
                    "city": "London",
                    "zipCode": 1234,
                    "street": "23 Nottingham dr",
                    "contact": "123456678"
                },
                {
                    "city": "Los Angeles",
                    "zipCode": 67834,
                    "street": "345 Richmond dr",
                    "contact": "23456"
                }
            ]
        },
        {
          "name": "Peter Drink",
          "address": [
                {
                    "city": "Delhi",
                    "zipCode": 70046,
                    "street": "SP Road",
                    "contact": "9844334"
                },
                {
                    "city": "Los Angeles",
                    "zipCode": 67834,
                    "street": "433 Ku St",
                    "contact": "12345677"
                }
            ]
        }
    ]
}

输入标准是zipCode，我需要能够基于zipCode获取所有文档中的所有person对象

输入：zipCode 67834 预期产出：

[
    {
        "city": "Los Angeles",
        "zipCode": 67834,
        "street": "433 Ku St",
        "contact": "12345677"
    },
    {
        "city": "Los Angeles",
        "zipCode": 67834,
        "street": "345 Richmond dr",
        "contact": "23456"
    }
]

---

您需要首先取消数组的测试（这将使父文档与数组中的每个文档进行自连接）

---

索引中的绑定变量名必须与非最新别名匹配才能选择索引。

感谢您的回复，它成功了：）。你能在这里分享一下如何在zipCode上创建索引吗？

SELECT a.*
FROM default AS d
UNNEST d.persons AS p
UNNEST p.address AS a
WHERE a.zipCode = 67834 AND .....;


CREATE INDEX ix1 ON default(DISTINCT ARRAY (DISTINCT ARRAY a.zipCode FOR a IN p.address END) FOR p IN persons END);