ZQL is a simple structured query language that allows you to string together the right fields to search using specific values with the appropriate operators and keywords. The text box allows auto-completion making it easy to construct a query. With the cursor in the search box, select the spacebar on your keyboard to be shown a list of fields, operators, keywords and values. For example, if you are looking for all the test executions with a specific execution status in the 'SM Portfolio' project, you would enter a query that looked like this:
project="SM Portfolio Project" and executionStatus=PASS
Here, the project and executionStatus are fields, SM Portfolio Project and PASS are the values, joined together by the keyword and with the operator =.