SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function JSONExtract (children 1)
     ExpressionList (children 2)
      Literal \'{"a":3333.6333333333333333333333, "b":"test"}\'
      Literal \'Tuple(a Decimal(10,1), b LowCardinality(String))\'