SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function positionUTF8 (children 1)
       ExpressionList (children 2)
        Function materialize (alias h) (children 1)
         ExpressionList (children 1)
          Literal \'\'
        Function lowerUTF8 (children 1)
         ExpressionList (children 1)
          Literal \'\' (alias n)
      Function positionCaseInsensitiveUTF8 (children 1)
       ExpressionList (children 2)
        Identifier h
        Identifier n
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10