SelectWithUnionQuery (children 3)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function untuple (alias x) (children 1)
     ExpressionList (children 1)
      Function JSONExtract (children 1)
       ExpressionList (children 2)
        Literal \'{"key": "value"}\'
        Literal \'Tuple(key String)\'
 Identifier Vertical
 Set
