cwestin
/ aggregation.js
Created
November 28, 2011 19:12
Mongo shell script and sample documents used for my aggregation talks 12/2011
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
| // make sure we're using the right db; this is the same as "use aggdb;" in shell | |
| db = db.getSiblingDB("aggdb"); | |
| // simple projection | |
| var p1 = db.runCommand( | |
| { aggregate : "article", pipeline : [ | |
| { $project : { | |
| tags : 1, | |
| pageViews : 1 | |
| }} |