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

jq '.result.property_history // empty | map(select(.event_name == "Sold"))[0:1][].date'`

Trick is to use // together with empty.

Another alternative is to use an additional select:

jq '.result.property_history | select(.) | map(select(.event_name == "Sold"))[0:1][].date'`