我有一个这样的收藏:
[
{
"ticketNumber" : "00001",
"version" : "0"
},
{
"ticketNumber" : "00001",
"version" : "1"
},
{
"ticketNumber" : "00001",
"version" : "2"
},
{
"ticketNumber" : "00002",
"version" : "0"
},
{
"ticketNumber" : "00003",
"version" : "0"
},
{
"ticketNumber" : "00003",
"version" : "1"
}
]
该模型还有其他属性,我将在以后的聚合管道中使用。我首先需要进行某种过滤,以便它根据不同的ticketNumber和最新版本返回票证:
[
{
"ticketNumber" : "00001",
"version" : "2"
},
{
"ticketNumber" : "00002",
"version" : "0"
},
{
"ticketNumber" : "00003",
"version" : "1"
}
]
不知道这是否可行?
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