Answer Posted / rahul

hi,
primary keys are not mandatory in the teradata,but when
we are specify the pk in column the optimizer creates the
upi in that column. and more over pk composite have no limit
in teradata. the creation of pk is combination of primary
key and not null see the example

create set/multiset table <table name>
(
orderid integer primary key not null,
---
----- etc
);

this creates upi on the orderid column.

if we doesn't mentioned nupi will be created..

thanks

Rahul

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