Re: UNIQUE constraint and indexing

On 27 Sep 2001, Arcady Genkin wrote:

> Is the index, created implicitely by "UNIQUE" constraint, the same
> kind as created explicitely with "CREATE INDEX"?  In other words,
> is the following piece of SQL redundant?
> 
> create table foo (
>        bar serial primary key,
>        baz text not null unique );
> create index foo_baz_idx on foo(baz);

Apart from the index for unique being a unique index, I believe so.