Unset an array element

Question

Is it possible to use the $unset operator on array field and remove an element that matches a query. For example i'm trying to remove 35 from field "files" array.

{
  _id : 1,
  files : [1,12,35,223]
}
// Ive tried this but it does not work
db.col.update({_id : 1}, {$unset : { files : 35}})
// or this does not work
db.col.update({_id : 1}, {$unset : { "files.35" : 1}})

Ryan Artecona · Accepted Answer · 2013-02-01 18:03:27Z

2

Have you tried the $pull operator? As in:

db.col.update({_id: 1}, {$pull: {files: 35}})

answered Feb 1, 2013 at 18:03

Ryan Artecona

6,2133 gold badges21 silver badges18 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

user20140268 · Accepted Answer · 2013-02-01 18:03:57Z

0

You can use $pull instead:

db.col.update({ _id : 1 }, {$pull: { files : 35 } })

answered Feb 1, 2013 at 18:03

user20140268

1,28811 silver badges16 bronze badges

Collectives™ on Stack Overflow

Unset an array element

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related