Re: create index on a field of udt

Oh, I didn't explain my question well, actually I want to create an index
on an udt in a table.

e.g.
create type info as (id int, name text);
creat table test (i info);
I want to run:
create index myindex on test (i.id)

On Mon, Jun 29, 2015 at 1:23 PM, John R Pierce <pierce(at)hogranch(dot)com> wrote:

> On 6/28/2015 10:08 PM, Shujie Shang wrote:
>
> create type info as (id int, name text);
> I want to create index on info.id.
>
>
> you can't create an index on a type, just on a table.
>
> create table info (id serial primary key, name text);
>
> or
>
> create table info (id serial, name text);
> alter table info add primary key(id);
>
> or more generically,
>
> create index on some_table ( some_field[,...] ) ;
>
> (a primary key is a unique not null constraint, this implies an index in
> postgresql)
>
>
> --
> john r pierce, recycling bits in santa cruz
>
>