extracting from jq without creating cross product

jq without cross product

https://stackoverflow.com/questions/69973010/how-do-i-avoid-creating-a-cross-product-when-extracting-multiple-sub-elements-fr

cat /tmp/jira.txt | jq '.[] | {key} + (.changelog.histories[] | {created} + (.items[] | {field,fromString,toString})) | select (.field=="status")'

gojq
find all rules where length of summary is less than 350 characters
trick is to convert to flat and then do the work
gojq --yaml-input '.groups[].rules[] | {alert: .alert, summary: .annotations.summary} | select(.summary | length <350) | .alert ' cart.rules.yml