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Databases Mongo Basics Go Further With Mongo Review: Updating Data and Doing More With Queries

Posted by Mohammad Muneeb
Mohammad Muneeb
1,994 Points

Isn’t supposed to be $set ????

This should be $set operator

2 Answers

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

I'm guessing you're on the question that asks:

The second parameter of the update method is the ___________ parameter.

The "update" method takes 3 parameters, which are: "query", "update", and "options". The correct answer is one of those. :wink:

Hakim Rachidi
Hakim Rachidi
38,490 Points
Hakim Rachidi
Hakim Rachidi
38,490 Points

Hi Mohammad

You somewhat right: we often use the $set operator for simple update operations, but inside the second parameter of update the $set operator is only one of many. Just to name a few:

  • $currentDate (sets field to the current date)
  • $inc (increments a field the specified number)
  • $mul (multiplies a number by a given number)
  • ...

All these operators and more can go into the update parameter (even multiple) like so:

db.cats.update({}, {$currentDate: {feededAt: true}, $inc: {age: 1}});