SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 6)
    Identifier json.a.a1
    Identifier json.a.arr.:`Array(JSON)`.arr1
    Identifier json.b
    Identifier json.arr
    Identifier json.^`a`
    Identifier json.arr.:`Array(JSON)`.arr1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_compact_advanced
