postgres 在sql语句中自动生成UUID

> create extension "uuid-ossp";
CREATE EXTENSION
> select uuid_generate_v4();uuid_generate_v4
--------------------------------------a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11

也可以
 

CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
//然後直接在sql調用即可
uuid_generate_v4()