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