Details
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Improvement
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Status: Closed
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Major - P3
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Resolution: Fixed
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None
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Query Execution
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Fully Compatible
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(copied to CRM)
Description
The $dateFromString Format Specifiers don't include the strftime %j modifier which is used to decode the day of the year as a decimal number (range 001 to 366).
It appears that this modifier is understood as part of kDateToStringFormatMap from timelib's TIMELIB_FORMAT_DAY_OF_YEAR when converting from a date to a string, but not from a string to a date.
For example:
db.foo.drop()
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db.foo.insert({ _id: 1, d: "2020-194-14:24:45.463" }); |
db.foo.aggregate( [ {
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$project: {
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date: {
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$dateFromString: {
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dateString: "%d", |
format: "%Y-%j-%H:%M:%S.%L" |
}
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}
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}
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} ] )
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// "errmsg" : "Failed to optimize pipeline :: caused by :: Invalid format character '%j' in format string", |
Note that for the above we were able to work around this limitation as follows:
db.foo.drop()
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db.foo.insert({ _id: 1, d: "2020-194-14:24:45.463" }); |
db.foo.aggregate([
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{ $project: {
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date: {
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$let: {
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vars: {
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parts: { $split: [ "$d", "-" ] } |
},
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in: { |
$add: [
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{ $toDate: { $concat: [
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{ $arrayElemAt: [ "$$parts", 0 ] }, |
"-01-01T", |
{ $arrayElemAt: [ "$$parts", 2 ] } ] |
} },
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{ $multiply: [
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{ $subtract: [
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{ $toInt: { $arrayElemAt: [ "$$parts", 1 ] } }, |
1 ] }, 86400000 ] }
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]
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}
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}
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}
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}}
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]);
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// { "_id" : 1, "date" : ISODate("2020-07-12T14:24:45.463Z") } |
Attachments
Issue Links
- is depended on by
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- Closed
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- is documented by
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DOCS-15857 [SERVER] Investigate changes in SERVER-50336: $dateFromString support for additional format specifiers (such as "%j" for day of year)
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- Backlog
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- is related to
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SERVER-74002 Day-of-year (%j) parsing inconsistency
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- Closed
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- split to
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- Closed
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