Couchbase N1QL：嵌套文档的更新

Question

拥有这样的嵌套文档时：

{
"blog": "testblog1",
"user_id": 41,
"comments": [
    {
        "comment": "testcomment1",
        "user_id": 883
    },
    {
        "comment": "testcomment2",
        "user_id": 790
    }
  ]
}

可以使用N1QL进行更新操作以向子文档添加额外的字段吗？

我想将字段"ranking" : "top comment"添加到带有注释testcomment2的子文档中：

{
"blog": "testblog1",
"user_id": 41,
"comments": [
    {
        "comment": "testcomment1",
        "user_id": 883
    },
    {
        "comment": "testcomment2",
        "user_id": 790,
        "ranking" : "top comment"
    }
  ]
}

网站注意：以下语句会在收集博客上的根文档中添加一个字段：

UPDATE Blog SET rank = "top blog" WHERE blog = "testblog1";

Answer 1

是的，您可以在N1QL中执行以下操作：

更新博客
SET c.ranking =＆＃34;热门评论＆＃34; FOR c IN comments cENment =＆＃34; testcomment2＆＃34;结束 博客=＆＃34; testblog1＆＃34;