Realm React Native - does SORT DISTINCT actually work?

Question

The Realm JavaScript documentation says:

Sorting and find distinct values are possible with functions SORT and DISTINCT, e.g. age > 20 SORT(name ASC, age DESC) DISTINCT(name).

• The ordering for sorting can be one of the following case insensitive literals: ASC, ASCENDING, DESC, DESCENDING.
• Any number of properties can appear inside the brackets in a comma separated list.
• Any number of sort/distinct conditions can be indicated, they will be applied in the specified order.
• Sort or distinct cannot operate independently, these conditions must be attached to at least one query filter.

I'm trying to use it like this:

realm
  .objects<CardFace>(CardFaceSchema)
  .filtered(`SORT(name ASC, expansion.releaseDate DESC) DISTINCT(name)`)

And get the red screen of death with the following message: SORT(name ASC, expansion.releaseDate DESC) DISTINCT(name):1:4(4): Invalid predicate.

What am I doing wrong? My realm version is 2.3.3

Answer 1

Sort and Distinct can't be applied without a predicate. So modify your filter to:

realm
  .objects<CardFace>(CardFaceSchema)
  .filtered(`TRUEPREDICATE SORT(name ASC, expansion.releaseDate DESC) DISTINCT(name)`)