Filters

As was mentioned earlier, it's possible to follow a link backwards by using the .< instead of .. When doing that it's also necessary to specify the type of the object at the start using [IS SomeType]. This can be used in a filter as well. For example, to get all those who posted a photo, try:

Input

The filter expression must evaluate to some boolean value or a set of boolean values for each element of the filtered set. If it evaluates to a set of booleans all objects that have at least one true value in their filter expression set will be included. This is why filtering by hashtags can be done like this:

Input

...or like this:

Input

You can use more complex expressions to filter the results. The only condition is that the it should be possible to evaluate these expressions for each element (typically an object) of the filtered set. Try the following query for selecting posts that mention "EdgeDB" in the title and use "database" as a hashtag:

Input