{
"expr": "**[*].$sift(λ($v){$v.Postcode})",
"dataset": "dataset1",
"bindings": {},
"result": [
{
"Address": {
"Street": "Hursley Park",
"City": "Winchester",
"Postcode": "SO21 2JN"
}
},
{
"Alternative.Address": {
"Street": "Brick Lane",
"City": "London",
"Postcode": "E1 6RF"
}
}
]
}