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Type:
New Feature
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Resolution: Duplicate
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: Aggregation Framework
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Labels:
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Query
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Fully Compatible
Currently a string literal as a value in a $project stage will cause an error:
db.foo.aggregate([{$project: {a: "hi"}}])
assert: command failed: {
"errmsg" : "exception: FieldPath 'hi' doesn't start with $",
"code" : 16873,
"ok" : 0
} : aggregate failed
Error: command failed: {
"errmsg" : "exception: FieldPath 'hi' doesn't start with $",
"code" : 16873,
"ok" : 0
} : aggregate failed
at Error (<anonymous>)
at doassert (src/mongo/shell/assert.js:11:14)
at Function.assert.commandWorked (src/mongo/shell/assert.js:254:5)
at DBCollection.aggregate (src/mongo/shell/collection.js:1278:12)
at (shell):1:8
2016-02-02T12:12:03.131-0500 E QUERY Error: command failed: {
"errmsg" : "exception: FieldPath 'hi' doesn't start with $",
"code" : 16873,
"ok" : 0
} : aggregate failed
at Error (<anonymous>)
at doassert (src/mongo/shell/assert.js:11:14)
at Function.assert.commandWorked (src/mongo/shell/assert.js:254:5)
at DBCollection.aggregate (src/mongo/shell/collection.js:1278:12)
at (shell):1:8 at src/mongo/shell/assert.js:13
We should allow this, with the semantics that it creates or replaces a field, and has that string literal as its value.
- depends on
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SERVER-18966 Allow exclusion in $project stage of aggregation pipeline
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- Closed
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- duplicates
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- Closed
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