exists

DPU:

0.1

Purpose:

To filter based on the existence of a target in an input object. For example, does it include any geographical information about the author?

Type:

The exists operator takes no argument.

Case:

None

Syntax:

exists

Synonyms:

None

Examples:

  1. Filter for posts that include geographical information.

    interaction.geo exists
    and interaction.sample < 5

  2. Filter for audio on Tubmlr.

    tumblr.artist exists
    and interaction.sample < 5

    Only audio activity has the tumblr.artist target populated.