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PostgreSQL外键不存在,继承问题?

我在我的数据库中苦苦寻找外键,可能它与继承有关?
所以这是基本设置:

-- table address
CREATE TABLE address
(
  pk_address serial NOT NULL,
  fk_gadmid_0 integer NOT NULL, -- this table already exists, no problem here
  street character varying(100),
  zip character varying(10),
  city character varying(50),
  public boolean,
  CONSTRAINT address_primarykey PRIMARY KEY (pk_address),
  CONSTRAINT gadmid_0_primarykey FOREIGN KEY (fk_gadmid_0)
      REFERENCES adm0 (gadmid_0) MATCH SIMPLE
      ON UPDATE CASCADE ON DELETE NO ACTION
)
WITH (
  OIDS=FALSE
);
ALTER TABLE address OWNER TO postgres;  

-- table stakeholder (parent)
CREATE TABLE stakeholder
(
    pk_stakeholder integer DEFAULT …
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postgresql inheritance foreign-keys

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