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法律研究为比 NOW 小的日期时间值查询 MongoDB？
对此，你可以使用 $lte 操作符和新的 Date()。我们先使用文档创建集合
>db.dateTimeValueLessThanNowDemo.insertOne({"CustomerName":"Larry","CustomerProductName":"Product-1","ArrivalDate":new ISODate("2017-01-31")});
{
"acknowledged" : true,
"insertedId" : ObjectId("5ca1e8ab66324ffac2a7dc59")
}
>db.dateTimeValueLessThanNowDemo.insertOne({"CustomerName":"Mike","CustomerProductName":"Product-2","ArrivalDate":new ISODate("2019-04-01")});
{
"acknowledged" : true,
"insertedId" : ObjectId("5ca1e8c166324ffac2a7dc5a")
}
>db.dateTimeValueLessThanNowDemo.insertOne({"CustomerName":"Chris","CustomerProductName":"Product-3","ArrivalDate":new ISODate("2019-03-31")});
{
"acknowledged" : true,
"insertedId" : ObjectId("5ca1e8d266324ffac2a7dc5b")
}
>db.dateTimeValueLessThanNowDemo.insertOne({"CustomerName":"Robert","CustomerProductName":"Product-4","ArrivalDate":new ISODate("2019-04-02")});
{
"acknowledged" : true,
"insertedId" : ObjectId("5ca1e8e766324ffac2a7dc5c")
}以下是使用 find() 方法从集合中显示所有文档的查询
> db.dateTimeValueLessThanNowDemo.find().pretty();
以下将产生输出
{
"_id" : ObjectId("5ca1e8c166324ffac2a7dc5a"),
"CustomerName" : "Mike",
"CustomerProductName" : "Product-2",
"ArrivalDate" : ISODate("2019-04-01T00:00:00Z")
}
{
"_id" : ObjectId("5ca1e8d266324ffac2a7dc5b"),
"CustomerName" : "Chris",
"CustomerProductName" : "Product-3",
"ArrivalDate" : ISODate("2019-03-31T00:00:00Z")
}
{
"_id" : ObjectId("5ca1e8e766324ffac2a7dc5c"),
"CustomerName" : "Robert",
"CustomerProductName" : "Product-4",
"ArrivalDate" : ISODate("2019-04-02T00:00:00Z")
}以下是对小于 NOW 的日期时间值进行查询。假设当前日期是 2019-04-02
> db.dateTimeValueLessThanNowDemo.find({ ArrivalDate: { $lte: new Date() } }).pretty();以下将产生输出
{
"_id" : ObjectId("5ca1e8ab66324ffac2a7dc59"),
"CustomerName" : "Larry",
"CustomerProductName" : "Product-1",
"ArrivalDate" : ISODate("2017-01-31T00:00:00Z")
}
{
"_id" : ObjectId("5ca1e8c166324ffac2a7dc5a"),
"CustomerName" : "Mike",
"CustomerProductName" : "Product-2",
"ArrivalDate" : ISODate("2019-04-01T00:00:00Z")
}
{
"_id" : ObjectId("5ca1e8d266324ffac2a7dc5b"),
"CustomerName" : "Chris",
"CustomerProductName" : "Product-3",
"ArrivalDate" : ISODate("2019-03-31T00:00:00Z")
}
更新于: 30-Jul-2019
614 次浏览
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