python - 当我在 couchbase 集合之间移动文档时，如何添加移动时间？

Question

我收集了一些文件。有时我需要将某些文档移动到另一个集合(也称为存档)，并且我还需要为其添加存档时间。现在我在两个查询中执行此操作，但希望减少到一个。

由于缺乏NoSQL经验，我很难做出任何假设，所以我寻求帮助。

query = f"""INSERT INTO bucket.scope.second_collection (KEY key_id, VALUE document)
            SELECT META(doc).id AS key_id, doc AS document
            FROM bucket.scope.first_collection AS doc
            WHERE id = {};"""
cluster.query(query, QueryOptions(positional_parameters=[]))

time = datetime.now(tz)
query = f"""UPDATE bucket.scope.second_collection
            SET date_of_moving = "{time}"
            WHERE id = "{}";"""
cluster.query(query, QueryOptions(positional_parameters=[]))

Answer 1

您可以使用OBJECT_ADD()向现有 JSON 对象添加其他字段。

我不是 Python 开发人员，所以如果我遇到一些语法错误，请原谅，但这里有一个 OBJECT_ADD 的示例:

query = f"""INSERT INTO bucket.scope.second_collection (KEY key_id, VALUE document)
            SELECT META(doc).id AS key_id, OBJECT_ADD(doc, ""date_of_moving"", {time}) AS document
            FROM bucket.scope.first_collection AS doc
            WHERE id = {};"""