alter table table_name add unique (TransactionNo, Register);
it will create a compound key that gurantees that only one combination of transactionNo and Register is allowed
chris
Hi,
My database table looks like this
TransactionID TransactionNo Register
1 23/2009 Probate
2 23/2009 Administration
3 25/2009 Finance
4 26/2009 Strategy
TransactionID is the primary key and is autogenerated. A register can only hold a unique TransactionNo though different registers can share the same TransactionNo. Is there a way that I can make TransactionNo field to be unique, and is there a way of coming up with a Primary Key Alias to represent the unique TransactionNo for each Register?
Regards.
Ouya Obunga
_______________________________________________
Skunkworks mailing list
Skunkworks@lists.my.co.ke
http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks
------------
Skunkworks Rules
http://my.co.ke/phpbb/viewtopic.php?f=24&t=94
------------
Other services @ http://my.co.ke
Other lists
-------------
Announce: http://lists.my.co.ke/cgi-bin/mailman/listinfo/skunkworks-announce
Science: http://lists.my.co.ke/cgi-bin/mailman/listinfo/science
kazi: http://lists.my.co.ke/cgi-bin/mailman/admin/kazi/general