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Type:
Bug
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Resolution: Duplicate
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Priority:
Minor - P4
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None
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Affects Version/s: 3.4.9
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Component/s: Aggregation Framework
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Labels:None
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ALL
To get the last documents based on their datetime property we can use:
db.lightningsStrikes.find({ datetime: { $gte: new Date(new Date() - 1000*60*20) } })
The command above gets lightning strikes of last twenty minutes.
To create a view of it we should to be able to do this: right?
db.createView("lastLightningStrikes", "lightningStrikes", [{ $match: { datetime: { $gte: new Date(new Date() - 1000*60*20) } } }])
But createView is interpreting new Date() at creation time instead of querying time, as below:
db.system.views.find().pretty()
{
"_id" : "lightning.latestLightningStrikes",
"viewOn" : "lightningStrikes",
"pipeline" : [
{
"$match" : {
"datetime" : {
"$gte" : ISODate("2017-09-28T19:25:34.410Z")
}
}
}
]
}
I suppose that it should be as below:
{
"_id" : "lightning.latestLightningStrikes",
"viewOn" : "lightningStrikes",
"pipeline" : [
{
"$match" : {
"datetime" : {
"$gte" : new Date(new Date() - 1000*60*20)
}
}
}
]
}
- duplicates
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SERVER-23656 Current timestamp variable for aggregate expressions
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- Closed
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