如何将这两个查询合并为一个:
查询1
db.Response.aggregate([
{
"$and": [
{ "job_details.owner_id" : 428 },
{ "job_details.owner_type" : 'searches' }
]
},
{
"$group": {
"_id": "$candidate_city_name_string",
"count": { "$sum": 1 }
}
}
])
查询2
db.Response.aggregate([
{
"$and": [
{ "job_details.owner_id" : 428 },
{ "job_details.owner_type" : 'searches' }
]
},
{
"$group": {
"_id": "$skill",
"count": { "$sum": 1 }
}
}
])
此查询的结果如下 输出1:
{
"result": [
{ _id: 'Bangalore', count: 8 },
{ _id: 'cochi', count: 9 }
]
"ok":1
}
输出2:
{
"result": [
{ _id: 'java', count: 7 },
{ _id: 'python', count: 10 }
],
"ok":1
}
如何在一个查询中获得这两个结果?
我需要这样的输出:
预期输出:
{
"result": [
"candidate_city_name_string": [
{ _id: 'Bangalore', count: 8 },
{ _id: 'cochi', count: 9 }
],
"skill": [
{ _id: 'java', count: 7 },
{ _id: 'python', count: 10 }
]
],
"ok":1
}
有可能吗?在某处,我看到了$facet
的一些内容,但我对此并不了解。
答案 0 :(得分:1)
db.Response.aggregate([
{"$match":{"$and":[{"job_details.owner_id" : 482},{"job_details.owner_type" : 'searches'}]}},
{$facet: {
"candidate_sublocation_name_string": [
{"$group": {"_id":"$candidate_sublocation_name_string","count": {"$sum": 1 }}}
],
"skill": [
{"$group": {"_id":"$skill","count": {"$sum": 1 }}}
]
}}])