Unflatten results of raw queries

Sequelize will not process the results of raw queries. This becomes a problem with eager loading as the data returned from the underlying db engine looks like this:

{
  'id: 1,
  'foo': 'bar',
  'user.id': 222,
  'user.name': 'David'
}

This should be converted into a nested structure:

{
  'id: 1,
  'foo': 'bar',
  'user': {
    'id': 222,
    'name': 'David'
  }
}

Unfortunately, the method which does the nesting is “_private”, and the techniques used within the method will not work on “raw” data. Thus, there are two solutions:

1. Set raw: false whenever eager loading is happening. And then serialize the results into a POJO.
   • pros: will let sequelize do the nesting
   • cons: sequelize is instantiating all of the data just for the sake of nesting it. This is not very efficient and loses the performance gains of “raw” queries.
2. We write a nesting function ourselves.
   • pros: maintains the performance gains of nested queries.
   • cons: will use slightly different technique than sequelize internals and could cause unforeseen problems?

My vote is for #2, as I think it will work for 99% of cases. Those who experience the unexpected can use raw: false. I would make a note about this in the docs.

[daffl]

I’m starting to feel that at least with Sequelize we seem to be having just as many issues with raw: true as we had with raw: false.

[daffl]

This is actually not an issue anymore and the solution has been documented in the working with model instances section