What is the difference of a query with .exec and without?

I declare the next query:

      const User = await User.findOne().and([{
        "accounts.email": re.body.email
      },{
        status: 1
      }])

What is the difference if add .exec() at the end of the query?

>Solution :

As far as the functionality is concerned adding .exec() to async/await query wouldn’t make a difference.

But as per mongoose documentation, you "should" use .exec() as it will provide you with better stack trace.

Check – Should You Use exec() With await?

Without exec(), the stack trace does not include the calling code.

With exec(), the stack trace includes where in your code you called exec()