How to check for presence of 'key' in jq before iterating over the values

Question

I get Cannot iterate over null (null) from the below query because .property_history is not present in result object.

How do i che

Answer 1

You can use the select-expression in jq to do what you intend to achieve, something as,

jq '.result | select(.property_history != null) | .property_history | map(select(.event_name == "Sold"))[0].date'
"08/30/2004"