Find tests without test execution

Hello,

we are using Zephyr Squad 6.1.1.61109179 on JIRA Server and have the following issue:

We have a lot of test cases, some with executions, some without. However, i have not figured out yet how to search for Tests in JIRA where no execution has been created yet and get a list of those issues.

So far what i have read it seems like the issue is, that in JÌRA i can search for tests with JQL and in Zephyr with ZQL? But combinating it is not that easy.