Use of jq in aws cli

jq is resourceful and helps in getting all the operations done, which query options fails

for example, I was struggling to pass a shell variable to cli command which I was able to do though jq

below command lets me get the exact name of the emr cluster and passing cluster ID as shell variable.

aws emr list-clusters --region $region |jq -r --arg cid "$cid"  '.Clusters[] | select(.Id == $cid ) | .Name'

Example to query the instances tag

aws ec2 describe-instances  --region us-east-1 --instance-ids i-02426396b622c2b23   2> /dev/null | jq -r '.Reservations[].Instances[].Tags[] | select(.Key=="owner") | .Value'