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Type:
New Feature
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Resolution: Duplicate
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Priority:
Minor - P4
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None
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Affects Version/s: None
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Component/s: Querying
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None
Hello,
Related page: https://docs.mongodb.org/manual/reference/operator/projection/positional/#array-field-limitation
Actually I can figure it out why this limitation is present. The issue might be regarding other operations. Especially `update`.
Is there any possibility of adding a new feature which providing usage of the second array field in the query document as a new feature in the feature?
(maybe by using sub-operator like `$arr1` and `$arr2`)
It seems as a private issue. However, cannot perform two-phase commits if an array value would be updated.
For instance;
var query = {
_id: t.customer_id,
invoices: { $elemMatch: { 'year': t.year, 'month': t.month } }
pendingTransactions: t._id
}
var update = {
'invoices.$.amount': 549,
$push: { pendingTransactions: t._id }
}
db.customers.update(query, update)
- duplicates
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SERVER-18500 Resolve ambiguity of positional projections with multiple implicit array traversal predicates in certain cases
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- Backlog
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- related to
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- Closed
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