MongoDB : “unexpected token” error when trying to Update document field that is an array

Question

I have a collection called Names with a document that looks like this:

{
   "_id":33,
   "listOfNames" : ["John", "Fred", "Andy"]
}

I am trying to do an update command that looks like the following:

db.Names.update{{}, {$set: {"listOfNames" : ["John", "Mary"]}, {multi:true})}

This fails with "unexpected token". What is the correct syntax to use when updating a field in a series of documents when the field is an array?

Answer 1

use this query

db.Names.update({}, 
{
    $set: {"listOfNames":["John", "Mary"]},     
}, { multi : true })

• Anyway you put redundant { after update function, You should use (
• And you put ) in wrong place