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Assigned Teams:

Query Optimization
Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Steps To Reproduce:
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Enterprise test> db.foo.drop(); true Enterprise test> db.foo.createIndex({a: 1}); a_1 Enterprise test> db.adminCommand({setParameter: 1, planRankerMode: "histogramCE"}); { was: 'histogramCE', ok: 1 } Enterprise test> db.foo.find({a: {$in: []}}); MongoServerError[Location9586709]: Hit a MONGO_UNIMPLEMENTED_TASSERT! Enterprise test> db.foo.find({a: {$all: []}}); MongoServerError[Location9586709]: Hit a MONGO_UNIMPLEMENTED_TASSERT!
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Enterprise test> db.foo.drop(); true Enterprise test> db.foo.createIndex({a: 1}); a_1 Enterprise test> db.adminCommand({setParameter: 1, planRankerMode: "histogramCE" }); { was: 'histogramCE' , ok: 1 } Enterprise test> db.foo.find({a: {$in: []}}); MongoServerError[Location9586709]: Hit a MONGO_UNIMPLEMENTED_TASSERT! Enterprise test> db.foo.find({a: {$all: []}}); MongoServerError[Location9586709]: Hit a MONGO_UNIMPLEMENTED_TASSERT!
Sprint:
QO 2025-01-20

Empty $in lists can not be estimated with heuristicCE or histogramCE