Wouter added a comment - Jul 08 2009 11:03 AM UTC

Wouter added a comment - Jul 08 2009 11:03 AM UTC I would like $unset/$rename too. Let's say we have { _id : 1, toberemoved : 'hello', dontremove : 'world' } 1) $db.foo.save( { _id : 1, dontremove : 'world' }); Could have concurrency issues. 2) $db.foo.update( { _id : 1, toberemoved : 'hello', dontremove : 'world' }, { _id : 1, dontremove : 'world' } ); Will fail if another process already changed the object. 3) $db.foo.update( { _id : 1 }, { $unset : { toberemoved : 1 } } ); This will never fail nor have any concurrency issues -ideal behavior-,

Wouter added a comment - Sep 01 2009 03:31 PM UTC

Wouter added a comment - Sep 01 2009 03:31 PM UTC Please make $unset compatible with arrays aswell, so that I can unset a value in an array based on it's key: $unset : { 'comments.5' : TRUE }

Mathias Stearn added a comment - Oct 28 2009 05:45 PM UTC

Mathias Stearn added a comment - Oct 28 2009 05:45 PM UTC Splitting to two issues. If you want $reduce, watch or vote for http://jira.mongodb.org/browse/SERVER-394

auto added a comment - Dec 11 2009 04:03 PM UTC

auto added a comment - Dec 11 2009 04:03 PM UTC Author:{'name': 'Mathias Stearn', 'email': 'mathias@10gen.com'} Message: $unset support in update. SERVER-134 http://github.com/mongodb/mongo/commit/cb16e7c62b094c81fd443b6f33f9b72b2f5a58f9