title: How to search Datadog logs by Attribute
body: <p>Question about searching logs in Datadog.</p>
  <p>Search works on regular strings in the CONTENT portion of the log.  However, if JSON is passed to the CONTENT portion, the JSON elements are automatically parsed into Attributes.  But the Attributes are NOT searchable.</p>
  <p>How do I search for logs by Attribute?</p>
  <p>It seems like a step backwards to supply log data in JSON to improve indexing, but then LOSE the ability to search on those elements.</p>