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)
        Function materialize (alias h) (children 1)
         ExpressionList (children 1)
          Literal \'абв\'
        Function lower (children 1)
         ExpressionList (children 1)
          Literal \'аБв\' (alias n)
      Function positionCaseInsensitive (children 1)
       ExpressionList (children 2)
        Identifier h
        Identifier n
