JQL

assigneecommentcreatedtext
AssigneeCommentCreated date: This is a master-field which includes summary, description, environment, comment, and custom text fields.
ANDORNOTEMPTYNULLORDER BY

CONTAINS

text ~ "AWS" ORDER BY created DESC

text ~ "AWS" AND Summary !~ "Jira" ORDER BY created DESC

!~ (not contains) is not valid for the "text" master-field. To perform a "not contains" comparison use the individual text fields instead (i.e. summary, description, environment, comment, or custom text fields.

EQUALS

reporter = "John Doe"

reporter = "John Doe" AND assignee != "Joe Bloggs"