Query

{
  "where": "c.region == \"WA\" && o.orderDate >= 852102000000", 
  "as": [
    "c", 
    "o"
  ], 
  "from": [
    "Customers", 
    "c.orders"
  ], 
  "select": [
    "c.customerId", 
    "o.orderId"
  ]
}

Results

{}