问题描述
我在 Mongo 集合中有以下文档。
{
"_id":"112211","student":{
"student_display_name":"Siva","first_name":"Siva","last_name":"Ram","age":"20","department":"IT","section":"D","edit_sequence":"2","unique_id":"siva_2","address":{
"data":[
{
"student_display_name":"Siva","student_id":"siva_2","street":"Perter's Park","area":"BMS Road","pincode":"560001"
},{
"student_display_name":"Siva","student_id":"siva_1","street":"St.Mary's Colony","student_id":"siva_0","street":"MG Colony","pincode":"560001"
}
]
},"student":{
"data":[
{
"student_display_name":"Siva","section":"B","edit_sequence":"1","unique_id":"siva_1"
},"section":"A","edit_sequence":"0","unique_id":"siva_0"
}
]
}
},"college":"student college","root_table":"student"
}
从此文档中,我需要使用以下匹配过滤器进行查询。
{
"$match":{
"$or":[
{
"student.address.data.pincode":"560001"
},{
"$and":[
{
"student.address.data.data.last_name":"Siva"
},{
"student.address.data.data.first_name":"Ram"
}
]
}
]
}
}
使用这些匹配过滤器,此外, 我们将获得 address.data 数组下的所有 3 个对象。 但是,从这些结果中,我想根据“student.unique_id like student.address.data.student_id = student.unique_id”值进一步过滤,这样我只会得到如下匹配项。
这是我想要的最终结果。
{
"address":{
"student_display_name":"Siva","pincode":"560001"
}
}
如何在 MongoDB 中实现这一点?
解决方法
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