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@xxxxxxxxxxxx> 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
