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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2.1.2, 2.2.0, 2.2.1
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Fully Compatible
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Query 12 (04/04/16)
Description
We've decided to add the following operators:
- $isoWeek
- $isoDayOfWeek
- $isoWeekYear
And to add the corresponding substitutions "%G", "%V", and "%u" to the $dateToString expression.
Example
Input
{_id: 0, date: ISODate("2016-01-01T00:00:00Z")} // Thu, Jan 1, 2016 |
Pipeline
db.coll.aggregate([{
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$project: {
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dayOfWeek: {$dayOfWeek: "$date"}, |
isoDayOfWeek: {$isoDayOfWeek: "$date"}, |
year: {$year: "$date"}, |
isoYear: {$isoWeekYear: "$date"}, |
week: {$week: "$date"}, |
isoWeek: {$isoWeek: "$date"}, |
isoString: {$dateToString: {format: "%G-W%V-%u", date: "$date"}} |
}
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}])
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Output
{
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_id: 0,
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dayOfWeek: 6, // 1 is Sunday, 7 is Saturday |
isoDayOfWeek: 5, // 1 is Monday, 7 is Sunday |
year: 2016,
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isoYear: 2015, // 2016 starts on Jan 4th under ISO calendar. |
week: 0,
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isoWeek: 53,
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isoString: "2015-W53-5" // $dateToString is also modified to support |
// the concepts above. |
}
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Additional Notes
- See the wikipedia article on the ISO-8601 standard.
- Throws an error if the input is not a Date
Original Description
It would be very useful for $week to have an option to start from Monday. Get it from current locale, is first that came in my mind.
Attachments
Issue Links
- is depended on by
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CSHARP-1623 Add variants of $week, $year, $dayOfWeek that conform to the ISO-6801 spec*
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- Closed
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- is documented by
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DOCS-9548 Docs for SERVER-7695: Add variants of $week, $year, $dayOfWeek that conform to the ISO-6801 spec
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- Closed
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- is related to
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- Closed
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- Closed
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- links to