Question

我有以下文档与doc key cart :: 16

 {
        "_type": "NSCart",
        "_metadata": {
               "created_at": 1473075845614,
               "updated_at": null
        },
        "_id": "f28bc609-6aba-47e5-8e83-5bee2397566f",
        "userId": "B1HvmsLj57c9235c",
        "items" : [{
               "itemId": "N1d55j8m4xr",
               "seller": "ByD9T4Ks57cbbd8e",
               "license": null,
               "basePrice": 0
             },{
              "itemId": "L9nd6Dswl4v",
              "seller": "ByD9T4Ks57cbbd8e",
              "license": E122,
              "basePrice": 500,
              "eCharge": 10,
              "total": 510
        }]
 }

现在我要更新项目ID为N1d55j8m4xr的doc

{
      "itemId": "N1d55j8m4xr",
      "seller": "ByD9T4Ks57cbbd8e",
      "license": null,
      "basePrice": 590,
      "eCharge": 18,
      "total": 608
}

在n1ql中有方法array_replace但没有获得所需的输出。

Answer 1

使用N1QL文档中的以下语法。

UPDATE mybucket SET x.field = newvalue FOR x IN myarray WHEN x.id = myid END;

Answer 2

update `buc_name` set items = 
CASE
       WHEN "N1d55j8m4xr" IN items [*].itemId
          THEN (ARRAY CASE WHEN itm.itemId = "N1d55j8m4xr"
            THEN {
          "itemId": "N1d55j8m4xr",
          "seller": "ByD9T4Ks57cbbd8e",
          "license": null,
          "basePrice": 590,
          "eCharge": 18,
          "total": 608
       }
       ELSE itm
         END
   FOR itm IN items END) end where "N1d55j8m4xr" IN items [*].itemId

更新couchbase 4.1中对象数组中的特定对象

2 个答案: