SQL Unique Record not column?

Question

Is there a way to insert into an SQL database where the whole record is unique? I know you can make primary keys and unique columns, but that is not what I want.

Wha

Answer 1

You know how to make a unique index on a column.

Just make that on all the columns that should, together, be unique:

create unique index foo 
on tablename(columnone, columntwo, columnthree);

Note that the need to do this may be an indication that your table is not sufficiently normalized.