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JSON='[
{
"id": 1,
"name": "John"
},
{
"id": 2,
"name": null
}
]'
echo $JSON | jq '.[] | select(.name != null)'
# Output
{
"id": 1,
"name": "John"
}
echo $JSON | jq '.[] | select(.name != null) | .name'
# Output
"John"