SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function sleepEachRow (children 1)
     ExpressionList (children 1)
      Function pow (children 1)
       ExpressionList (children 2)
        Literal UInt64_2
        Literal UInt64_31
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_9007199254740992
   Set
