Unable to query rows with array keys which equals empty array []

[hybeats]

Issue Description

Couldn't find a way to query rows with array keys equal to empty array.
For example:
I have class 'Shelf' with key 'books' type of Array
I have 2 rows. First row has books = [ { Pointer }, { Pointer } ]. Second row has books = []

How do i query second row?

[santiagosemhan]

Hi! @hybeats . My workaround to make these types of queries is the following:

  const pipeline = [{ match: { books: { $eq: [] } } }];
  const shelfs = await query.aggregate(pipeline);
  return shelfs;

@davimacedo Maybe it will be good to query with equalTo: [] method.

[santiagosemhan]

@dplewis Is this an issue with Parse JS SDK?

[dplewis]

@hybeats Sorry for the late reply. Can you provide sample code or write up a failing test?

[santiagosemhan]

@dplewis I tried this code, without a successful response.

  const query = new Parse.Query('Shelf');
  query.equalsTo('books', []);
  const shelfs = await query.find();
  return shelfs;

[VenkateshNani512]

Could you please help me anyone
How to check array empty and array contain some value and undefined ?
in parse android
ArrayList list = new ArrayList();
list.add("CP");
query.whereDoesNotExist("businessPlatform");
query.whereContainedIn("businessPlatform", list);
This is not working How should i process this type of condition AND Operation is available in parse query ?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[gcostaapps]

Any news about this? The aggregate workaround doesn't work for me because I put this query in an OR query.

[mtrezza]

@gcostaapps If you experience this issue with the latest version of Parse Server could you please open a new issue so we can investigate this?

[zivchen]

Still happens, version 5.3.3
@santiagosemhan example is accurate, for array field with [] value

[mtrezza]

Could you open a PR against alpha with a failing test that demonstrates the issue? That would help us to address it.

[parse-github-assistant]

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[tiavina-mika]

Is it fixed with the latest versions?

[mtrezza]

We don't know. If someone could open a PR with a failing test, that would help us.