SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function position (children 1)
       ExpressionList (children 2)
        Literal \'abc\' (alias h)
        Function lower (children 1)
         ExpressionList (children 1)
          Literal \'C\' (alias n)
      Function positionCaseInsensitive (children 1)
       ExpressionList (children 2)
        Identifier h
        Identifier n
