Postgresql error must be owner of relation when changing a owner object

Question

What is the grant option trick I need to give to the current user   userA   to allow him to change a object s owner which belongs by another user   userC     More precisely  the contact table is owned by the userC and when I perform the following query for changing the owner to the userB  connected with the userA   alter table contact owner to userB    I get this error   ERROR   must be owner of relation contact   But userA has all needed rights to do that normally  the  create on schema  grant option should be enough    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    Thks    Command line output   root server    psql -U userA myDatabase myDataBase  gt  dt contact     List of relations Schema    Name       Type      Owner ------- --------- ---------- --------- public   contact   table      userC  1 row  myDataBase  gt  myDataBase  gt alter table contact owner to userB  ERROR   must be owner of relation public contact myDataBase  gt

User · Answer

This solved my problem   Sample alter table statement to change the ownership    ALTER TABLE databasechangelog OWNER TO arwin ash  ALTER TABLE databasechangeloglock OWNER TO arwin ash

User · Answer

From the fine manual      You must own the table to use ALTER TABLE    Or be a database superuser      ERROR   must be owner of relation contact   PostgreSQL error messages are usually spot on  This one is spot on

User · Answer

Thanks to Mike s comment  I ve re-read the doc and I ve realised that my current user  i e  userA that already has the create privilege  wasn t a direct indirect member of the new owning role     So the solution was quite simple - I ve just done this grant   grant userB to userA    That s all folks  -    Update   Another requirement is that the object has to be owned by user userA before altering it

[postgresql] Postgresql: error "must be owner of relation" when changing a owner object

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