Created
September 4, 2012 14:21
-
-
Save rhyskeepence/3621591 to your computer and use it in GitHub Desktop.
group by day with aggregate function
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| db.prod.aggregate( | |
| { $match : { _id: { $gte: someTimestamp }}}, | |
| { $group : | |
| { | |
| _id : { $subtract: ["$_id", { $mod: ["$_id", 86400000] } ] } , | |
| averagePerDay : { $avg : "$threadCount" } | |
| } | |
| } | |
| ) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment