Created
March 7, 2011 06:15
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How to update a single field in a MongoDB collection for all documents matching a specific criteria
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| // FROM: http://www.mongodb.org/display/DOCS/Updating#Updating-update%28%29 | |
| // | |
| // db.collection.update( criteria, objNew, upsert, multi ) | |
| // criteria - query which selects the record to update; | |
| // objNew - updated object or $ operators (e.g., $inc) which manipulate the object | |
| // upsert - if this should be an "upsert"; that is, if the record does not exist, insert it | |
| // multi - if all documents matching criteria should be updated | |
| // | |
| // SQL VERSION: | |
| // UPDATE myTable SET dateField = '2011-01-01' WHERE condField = 'condValue' | |
| db.myCollection.update({condField: 'condValue'}, { $set: { dateField: new Date(2011, 0, 1)}}, false, true); | |
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