Arangodb groupby查询多个字段

我有一个arangodb集合中的产品数据库，其中一个产品有多种尺寸。问题在于，对于每种尺寸，都会重复使用相同的产品。但每种产品都有一个共同的组号。像这样：

{"name": "product1", "description": "someDescription", size: 5,price: 12 groupNumber: 12}
{"name": "product1", "description": "someDescription", size: 15, price: 26, groupNumber: 12}
{"name": "product1", "description": "someDescription", size: 25, price: 84, groupNumber: 12}
{"name": "product1", "description": "someDescription", size: 35, price: 106, groupNumber: 12}

{"name": "product2", "description": "someDescription", size: 5, price: 12, groupNumber: 11}
{"name": "product2", "description": "someDescription", size: 15, price: 22, groupNumber: 11}
{"name": "product2", "description": "someDescription", size: 25, price: 32, groupNumber: 11}
{"name": "product2", "description": "someDescription", size: 35, price: 43, groupNumber: 11}

我现在必须显示产品列表（在网页中），但每个产品应仅显示一次，每个产品的尺寸和价格如下所示：

product1 someDescription sizes: 5,15,25,35, prices: 12,26,84,106
product2 someDescription sizes: 5,15,25,35, prices: 12,22,32,43
...

FOR p IN products
  COLLECT description = p.description, name = p.name INTO groups
  RETURN { 
    "name" : name, 
    "description": description,
    "prices" : groups[*].p.price,
    "sizes" : groups[*].p.size
  }

---

如何操作？

忽略

groupNumber

并按

name

分组，查询如下所示：

product1 someDescription sizes: 5,15,25,35, prices: 12,26,84,106
product2 someDescription sizes: 5,15,25,35, prices: 12,22,32,43
...

FOR p IN products
  COLLECT description = p.description, name = p.name INTO groups
  RETURN { 
    "name" : name, 
    "description": description,
    "prices" : groups[*].p.price,
    "sizes" : groups[*].p.size
  }

给定（更正的）示例数据，查询将返回：

[
  {
    "name": "product1",
    "description": "someDescription",
    "prices": [
      12,
      84,
      106,
      26
    ],
    "sizes": [
      5,
      25,
      35,
      15
    ]
  },
  {
    "name": "product2",
    "description": "someDescription",
    "prices": [
      43,
      32,
      22,
      12
    ],
    "sizes": [
      35,
      25,
      15,
      5
    ]
  }
]

分组值未排序，但大小和价格的位置相对应，您可以通过将值压缩到大小价格图中来缓解这一事实：

FOR p IN products
  COLLECT description = p.description, name = p.name INTO groups
  RETURN { 
    "name" : name, 
    "description": description,
    "size_price_map" : ZIP(groups[*].p.size, groups[*].p.price)
  }

屈服：

[
  {
    "name": "product1",
    "description": "someDescription",
    "size_price_map": {
      "5": 12,
      "15": 26,
      "25": 84,
      "35": 106
    }
  },
  {
    "name": "product2",
    "description": "someDescription",
    "size_price_map": {
      "5": 12,
      "15": 22,
      "25": 32,
      "35": 43
    }
  }
]

---

考虑到你的声誉，你应该知道在这个社区里会有某种互动。我的回答有用吗？我错了吗？没有你方的确认，这个问答对其他访客来说几乎毫无价值。@TomRegner我不知道你的回答是对是错。但它看起来是正确的。我用了一种不同的方式，我会在一段时间内给出答案。同时享受向上投票：）我感兴趣的不是向上投票，请随意收回。aql/arango在这里不是一个非常活跃的小组，因此，我更关心Q/a的质量——如果我花时间设置一个测试用例并尝试解决一个问题，我很感激能给我一点时间来提高我们共同努力的有用性。