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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: Aggregation Framework
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Labels:None
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Minor Change
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ALL
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(copied to CRM)
This would effectively just output the existing field.
> db.reg.find()
{ "_id" : 1, "text" : "foo" }
{ "_id" : 2, "text" : "bar" }
{ "_id" : 3, "text" : "Bar" }
{ "_id" : 4, "text" : [ "bar", "foo" ] }
>db.reg.aggregate({$match:{text:/ba/i}}, {$unwind:"$text"})
...
"errmsg" : "exception: $unwind: value at end of field path must be an array",
"code" : 15978,
"ok" : 0
This will be important for collections where some document fields may be arrays, but some may not.
- is documented by
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DOCS-9024 $unwind of non-array should be allowed
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- Closed
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- is duplicated by
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SERVER-11718 Allow aggregation framework to optionally pass through non-arrays through $unwind
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- Closed
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- is related to
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- Closed
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