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Update MongoDB_聚合.md

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notes/MongoDB_聚合.md
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@ -335,36 +335,36 @@ db.employees.aggregate([
```text
{
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a1"),
"emp_no" : 10001,
........
"emp_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a5"),
"emp_no" : 10001,
"title" : "Senior Engineer"
}
]
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a1"),
"emp_no" : 10001,
........
"emp_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a5"),
"emp_no" : 10001,
"title" : "Senior Engineer"
}
]
},
.........
{
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a4"),
"emp_no" : 10004,
........
"emp_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a8"),
"emp_no" : 10004,
"title" : "Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a9"),
"emp_no" : 10004,
"title" : "Senior Engineer"
}
]
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a4"),
"emp_no" : 10004,
........
"emp_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a8"),
"emp_no" : 10004,
"title" : "Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a9"),
"emp_no" : 10004,
"title" : "Senior Engineer"
}
]
}
```
@ -410,69 +410,69 @@ db.employees.aggregate([
```text
{
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a1"),
"emp_no" : 10001,
.......
],
"emps_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a5"),
"emp_no" : 10001,
"title" : "Senior Engineer"
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a1"),
"emp_no" : 10001,
.......
],
"emps_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a5"),
"emp_no" : 10001,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a6"),
"emp_no" : 10002,
"title" : "Staff"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a6"),
"emp_no" : 10002,
"title" : "Staff"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a7"),
"emp_no" : 10003,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a8"),
"emp_no" : 10004,
"title" : "Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a9"),
"emp_no" : 10004,
"title" : "Senior Engineer"
}
]
{
"_id" : ObjectId("5d4011728ba16934ccce99a7"),
"emp_no" : 10003,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a8"),
"emp_no" : 10004,
"title" : "Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a9"),
"emp_no" : 10004,
"title" : "Senior Engineer"
}
]
},
{
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a2"),
.......
"emps_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a5"),
"emp_no" : 10001,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a6"),
"emp_no" : 10002,
"title" : "Staff"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a7"),
"emp_no" : 10003,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a8"),
"emp_no" : 10004,
"title" : "Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a9"),
"emp_no" : 10004,
"title" : "Senior Engineer"
}
]
"_id" : ObjectId("5d3ffaaa8ba16934ccce99a2"),
.......
"emps_title" : [
{
"_id" : ObjectId("5d4011728ba16934ccce99a5"),
"emp_no" : 10001,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a6"),
"emp_no" : 10002,
"title" : "Staff"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a7"),
"emp_no" : 10003,
"title" : "Senior Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a8"),
"emp_no" : 10004,
"title" : "Engineer"
},
{
"_id" : ObjectId("5d4011728ba16934ccce99a9"),
"emp_no" : 10004,
"title" : "Senior Engineer"
}
]
},
..........