Postgresql:更改所有者对象时出现错误 "must be owner of relation"

Question

我需要给当前用户 ("userA") 的 grant 选项/技巧是什么，以允许他更改属于另一个用户的对象的所有者("userC")?

更准确地说，contact 表归 userC 所有，当我执行以下查询以将所有者更改为 userB 时，与 userA 连接:

alter table contact owner to userB;

我收到这个错误:

ERROR:  must be owner of relation contact

但是 userA 拥有正常执行此操作所需的所有权限(“create on schema”授权选项应该足够了):

grant select,insert,update,delete on all tables in schema public to userA; 
grant select,usage,update on all sequences in schema public to userA;
grant execute on all functions in schema public to userA;
grant references, trigger on all tables in schema public to userA;
grant create on schema public to userA;
grant usage on schema public to userA;

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命令行输出:

root@server:~# psql -U userA myDatabase
myDataBase=>\dt contact
    List of relations
Schema |  Name   |   Type   |  Owner
-------+---------+----------+---------
public | contact | table    | userC
(1 row)
myDataBase=>
myDataBase=>alter table contact owner to userB;
ERROR:  must be owner of relation public.contact
myDataBase=>

Answer 1

感谢 Mike 的评论，我重新阅读了文档并意识到我当前的用户(即已经拥有 create 权限的 userA)不是 direct/新所有者角色的间接成员...

所以解决方案非常简单 - 我刚刚完成了这项资助:

grant userB to userA;

这就是所有人 ;-)

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更新:

另一个要求是在更改对象之前，该对象必须由用户 userA 拥有...