SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier 03173_nested_function_lc_null
   Function in (children 1)
    ExpressionList (children 2)
     Function xxHash32 (children 1)
      ExpressionList (children 1)
       Identifier id
     Literal Tuple_(UInt64_2158931063, UInt64_1449383981)
   Set
