Che errore ti dà?
Prova così:
codice:
<%
sql = "SELECT newecom.codart AS codart, "
sql = sql & " newecom.desart AS desart, "
sql = sql & " newecom.promo AS promo, "
sql = sql & " newecom.codfor AS codfor, "
sql = sql & " newecom.preart2 AS preart2, "
sql = sql & " newecom.disp AS disp, "
sql = sql & " '' AS nart "
sql = sql & " FROM newecom "
sql = sql & "UNION "
sql = sql & " SELECT ordini.codart AS codart, "
sql = sql & " '' AS desart, "
sql = sql & " '' AS promo, "
sql = sql & " '' AS codfor, "
sql = sql & " '' AS preart2, "
sql = sql & " '' AS disp, "
sql = sql & " ordini.nart AS nart "
sql = sql & " FROM ordini "
sql = sql & " WHERE codart IN(" & Left(strSQL, len(strSQL)-1) & ")" & ordina & ""
%>