o分组数据所需的数据查询

Question

**作为回应，我得到的数据不足**

[
{
    "EmpId": "8139fb43-5958-44ab-b2a5-0205f828a4e0",
    "Department": "0574109",
    "EmpName": "Name1"
},
{
    "EmpId": "42e1e945-d682-4215-9c82-02233c078d19",
    "Department": "0574109",
    "EmpName": "Name2"
},
{
    "EmpId": "5ef9114c-2043-4f9a-8a5c-06898dcd572b",
    "Department": "0674492",
    "EmpName": "Name3"
}

]

**并且我需要以下格式的数据：-**

"Datails" :[
{
"Department": "0574109",
"Employee": [
                {
                    "EmpId": "8139fb43-5958-44ab-b2a5-0205f828a4e0",
                    "EmpName": "Name1"
                },
                {
                    "EmpId": "42e1e945-d682-4215-9c82-02233c078d19",
                    "EmpName": "Name2"
                }
            ]
},
{
"Department": "0674492",
"Employee": [
                {
                    "EmpId": "5ef9114c-2043-4f9a-8a5c-06898dcd572b",
                    "EmpName": "Name3"
                }
            ]
}
]
}

**我正在尝试使用“ $ apply = groupby”，但这没有给我预期的结果。 **