我正在尝试查询具有一对 basename
和 entries
的多个文档,而 entries
是一个包含名为 CRC
。
2 item2 的示例:
{
"basename": "2020bb",
"entries": [
{
"name": "030-c1.bin",
"extension": "bin",
"basename": "030-c1",
"crc": "4f5e19bd",
"size": 1048576
},
{
"name": "030-c2.bin",
"extension": "bin",
"basename": "030-c2",
"crc": "d6314bf0",
"size": 1048576
},
{
"name": "030-c3.bin",
"extension": "bin",
"basename": "030-c3",
"crc": "47fddfee",
"size": 1048576
}
]
},
{
"basename": "mutnat",
"entries": [
{
"name": "sp-s2.sp1",
"extension": "sp1",
"basename": "sp-s2",
"crc": "9036d879",
"size": 1048576
},
{
"name": "sp-s3.sp1",
"extension": "sp1",
"basename": "sp-s3",
"crc": "c7f2fa45",
"size": 1048576
},
{
"name": "sp-4.sp1",
"extension": "sp1",
"basename": "sp-s4",
"crc": "e72943de",
"size": 1048576
}
]
}
我知道 basename
和 crc
,我正试图找到许多包含正确对的项目。为此,我使用了 $in
、$all
和 $elemMatch
{
"basename": {
"$in": [
"2020bb",
"mutnat"
]
},
"entries": {
"$in": [
{
"$all": [
{ "$elemMatch": { "crc": "4f5e19bd" } },
{ "$elemMatch": { "crc": "d6314bf0" } },
{ "$elemMatch": { "crc": "47fddfee" } }
]
},
{
"$all": [
{ "$elemMatch": { "crc": "9036d879" } },
{ "$elemMatch": { "crc": "c7f2fa45" } },
{ "$elemMatch": { "crc": "e72943de" } }
]
}
]
}
}
请注意,只是为了这个示例的简洁,我在 $in
中只有一项。实际上,这些数组中有多个项目。
但是使用这个查询我得到了这个错误:
MongoError: cannot nest $ under $in
编辑:澄清了我的数据和我的查询
最佳答案
db.xxx.find({
"basename": "2020bb",
"entries": {
$elemMatch: {
"crc": { $in: ["4f5e19bd", "d6314bf0", "47fddfee" ] }
}
}
})
关于mongodb - 蒙哥错误: cannot nest $ under $in,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54244796/