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Type:
Bug
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Status: Closed
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Priority:
Major - P3
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Resolution: Fixed
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Affects Version/s: None
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Component/s: Querying
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Labels:None
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Backwards Compatibility:Fully Compatible
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Operating System:ALL
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Backport Requested:v4.0, v3.6, v3.4, v3.2
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Epic Link:
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Sprint:Query 2019-01-28, Query 2019-02-11, Query 2019-02-25
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Case:
To reproduce:
./mongo
> pipeline = [\{ $match: { 'a': { $elemMatch: {$ne:400 }} }} ]
> db.hello.explain().aggregate(pipeline)
Result looks like:
{
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"stages" : [
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{
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"$cursor" : {
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"query" : {
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"a" : {
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"$elemMatch" : {
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"$ne" : 400
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}
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}
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},
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"queryPlanner" : {
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"plannerVersion" : 1,
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"namespace" : "test.hello",
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"indexFilterSet" : false,
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"parsedQuery" : {
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"a" : {
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"$elemMatch" : {
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"0" : {
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"" : {
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"$eq" : 400
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}
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}
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}
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}
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},
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"winningPlan" : {
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"stage" : "EOF"
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},
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"rejectedPlans" : [ ]
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}
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}
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}
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],
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"ok" : 1
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}
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Note that parsedQuery does not make sense. Namely, it has a key value which is an empty string.
- depends on
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SERVER-13779 Allow $not to be applied to $regex (currently only /regex/ syntax is allowed)
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- Closed
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- is depended on by
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SERVER-38544 Serialize optimized $match stage instead of original BSON
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- Open
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