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Type:
Bug
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Resolution: Duplicate
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Query Execution
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ALL
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3
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db.getFieldTest.aggregate(\{$project:{o1:{$getField:{input:"$_id", field:"x"}}}})
{ "_id" : ObjectId("66e8738aee1179b743aff3cd") }
{ "_id" : ObjectId("66e87391ee1179b743aff3ce") }
All non-objects seem to lead to same outcome. Design doc said:
The ‘input’ argument is optional and defaults to $$CURRENT. A query fatal exception is thrown if it evaluates to anything other than missing, null, undefined, or Object.
- describes design of
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SERVER-57914 Make $getField return missing if "input" is missing or not an object
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- Closed
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