$unwind should error when it encounters arrays within arrays

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    • Query Optimization
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      > db.foo.insert({x: [{y: [1, 2]}, {y: [3, 4]}]})
WriteResult({ "nInserted" : 1 })
> db.foo.aggregate([{$unwind: '$x.y'}])
// Produces no output.

      This is not very intuitive, and there doesn't seem to be any obvious reasonable output, so we should error in this case.

            Assignee:
            [DO NOT USE] Backlog - Query Optimization
            Reporter:
            Charlie Swanson
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            1 Vote for this issue
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              Created:
              Updated: