Hi, I need to generate a unique four letters string (p.e AAAA,AAAB) for any tuple I insert into a table, any idea ? How can I do this ? Thanks. -- Manuel Durán Aguete ALSERNET 2000 S.L http://www.alsernet.es Tlf: 902 187 187 Fax: 981 179 121 ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly