SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function cityHash64 (children 1)
     ExpressionList (children 1)
      Function groupArraySorted (children 2)
       ExpressionList (children 1)
        Identifier x
       ExpressionList (children 1)
        Literal UInt64_100
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier enum_pk
   Function in (children 1)
    ExpressionList (children 2)
     Identifier x
     Literal Tuple_(\'0\', \'1\')