Details
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Bug
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Resolution: Fixed
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Major - P3
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4.4.19, 6.0.5, 6.3.0-rc1
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None
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Query Optimization
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Minor Change
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ALL
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v7.0, v6.0, v5.0, v4.4
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QO 2023-05-15, QO 2023-05-29, QO 2023-06-12, QO 2023-06-26, QO 2023-07-10
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(copied to CRM)
Description
Sample data:
[
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{ c: 1, p: [ { id: 1 } ] },
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{ c: 2, p: [ { id: 1 } ] },
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{ c: 3, p: [ { id: 1 } ] },
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{ c: 4, p: [ { id: 1 } ] }
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]
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Index must be present to trigger the bug:
{ "p.id": 1, c: 1}
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Query in question:
db.test.find(
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{$and:[
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{$or:[{c:{$lt:2}},{c:{$gt:3}}]},
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{p:{$elemMatch:{id:{$eq:1,$exists:true}}}}
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]}
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)
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Without the index, it matches two documents. With index but without (redundant) $exists:true inside $elemMatch it also returns two documents. But with index and with redundant exists it fails to return any documents.
Attachments
Issue Links
- is related to
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- Closed
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- related to
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- Closed
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