使用子查詢更新postgres中的錶行 - updating table rows in postgres using subquery

問題：

Using postgres 8.4, My goal is to update existing table: 使用postgres 8.4，我的目標是更新現有表：

CREATE TABLE public.dummy
(
  address_id SERIAL,
  addr1 character(40),
  addr2 character(40),
  city character(25),
  state character(2),
  zip character(5),
  customer boolean,
  supplier boolean,
  partner boolean

)
WITH (
  OIDS=FALSE
);

Initially i tested my query using insert statement: 最初我使用插入語句測試了我的查詢：

insert into address customer,supplier,partner
SELECT  
    case when cust.addr1 is not null then TRUE else FALSE end customer, 
    case when suppl.addr1 is not null then TRUE else FALSE end supplier,
    case when partn.addr1 is not null then TRUE else FALSE end partner
from (
    SELECT *
        from address) pa
    left outer join cust_original cust
        on (pa.addr1=cust.addr1 and pa.addr2=cust.addr2 and pa.city=cust.city 
            and pa.state=cust.state and substring(cust.zip,1,5) = pa.zip  )
    left outer join supp_original suppl 
        on (pa.addr1=suppl.addr1 and pa.addr2=suppl.addr2 and pa.city=suppl.city 
                and pa.state=suppl.state and pa.zip = substring(suppl.zip,1,5))
    left outer join partner_original partn
        on (pa.addr1=partn.addr1 and pa.addr2=partn.addr2 and pa.city=partn.city
                  and pa.state=partn.state and pa.zip = substring(partn.zip,1,5) )
where pa.address_id = address_id

being Newbie I'm failing converting to update statement ie., updating existing rows with values returned by select statement. 作爲新手，我無法轉換爲更新語句，即用select語句返回的值更新現有行。 Any help is highly appreciated. 非常感謝您的幫助。

---

解決方案：

參考一： https://stackoom.com/question/QFd4
參考二： updating table rows in postgres using subquery