SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function avgWeighted (alias t) (children 1)
     ExpressionList (children 2)
      Function if (children 1)
       ExpressionList (children 3)
        Function less (children 1)
         ExpressionList (children 2)
          Identifier number
          Literal UInt64_50
        Literal NULL
        Identifier number
      Function toNullable (children 1)
       ExpressionList (children 1)
        Identifier number
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier t
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_100