Re: Improve tab completion for ALTER DEFAULT PRIVILEGE and ALTER TABLE

On Tue, 2 Apr 2024 at 13:08, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>
> On Mon, Apr 1, 2024 at 10:41 PM vignesh C <vignesh21@gmail.com> wrote:
> >
> > On Thu, 28 Mar 2024 at 13:05, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > Thank you for the patch!
> > >
> > > On Mon, Jul 3, 2023 at 12:12 AM vignesh C <vignesh21@gmail.com> wrote:
> > > >
> > > > Hi,
> > > >
> > > > Improved tab completion for "ALTER DEFAULT PRIVILEGE" and "ALTER TABLE":
> > > > 1) GRANT, REVOKE and FOR USER keyword was not displayed in tab
> > > > completion of alter default privileges like the below statement:
> > > > ALTER DEFAULT PRIVILEGES GRANT INSERT ON tables TO PUBLIC;
> > > > ALTER DEFAULT PRIVILEGES REVOKE INSERT ON tables FROM PUBLIC;
> > > > ALTER DEFAULT PRIVILEGES FOR USER vignesh revoke INSERT ON tables FROM dba1;
> > >
> > > +1
> > >
> > > >
> > > > 2) USER was not displayed for "ALTER DEFAULT PRIVILEGES IN SCHEMA
> > > > public FOR " like in below statement:
> > > > ALTER DEFAULT PRIVILEGES IN SCHEMA public FOR USER dba1 GRANT INSERT
> > > > ON TABLES TO PUBLIC;
> > >
> > > Since there is no difference FOR USER and FOR ROLE, I'm not sure we
> > > really want to support both in tab-completion.
> >
> > I have removed this change
> >
> > > >
> > > > 3) "FOR GRANT OPTION" was not display for "ALTER DEFAULT PRIVILEGES
> > > > REVOKE " like in below statement:
> > > > alter default privileges revoke grant option for select ON tables FROM dba1;
> > >
> > > +1. But the v3 patch doesn't cover the following case:
> > >
> > > =# alter default privileges for role masahiko revoke [tab]
> > > ALL         CREATE      DELETE      EXECUTE     INSERT      MAINTAIN
> > >  REFERENCES  SELECT      TRIGGER     TRUNCATE    UPDATE      USAGE
> >
> > Modified in the updated patch
> >
> > > And it doesn't cover MAINTAIN neither:
> > >
> > > =# alter default privileges revoke [tab]
> > > ALL               DELETE            GRANT OPTION FOR  REFERENCES
> > >  TRIGGER           UPDATE
> > > CREATE            EXECUTE           INSERT            SELECT
> > >  TRUNCATE          USAGE
> >
> > Modified in the updated patch
> >
> > > The patch adds the completions for ALTER DEFAULT PRIVILEGES REVOKE,
> > > but we handle such case in GRANT and REVOKE part:
> > >
> > > (around L3958)
> > >         /*
> > >          * With ALTER DEFAULT PRIVILEGES, restrict completion to grantable
> > >          * privileges (can't grant roles)
> > >          */
> > >         if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
> > >             COMPLETE_WITH("SELECT", "INSERT", "UPDATE",
> > >                           "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER",
> > >                           "CREATE", "EXECUTE", "USAGE", "MAINTAIN", "ALL");
> >
> > The current patch handles the fix from here now.
> >
> > > Also, I think we can support WITH GRANT OPTION too. For example,
> > >
> > > =# alter default privileges for role masahiko grant all on tables to
> > > public [tab]
> >
> > I have handled this in the updated patch
> >
> > > It's already supported in the GRANT statement.
> > >
> > > >
> > > > 4) "DATA TYPE" was missing in "ALTER TABLE table-name ALTER COLUMN
> > > > column-name SET" like in:
> > > > ALTER TABLE t1 ALTER COLUMN c1 SET DATA TYPE text;
> > > >
> > >
> > > +1. The patch looks good to me, so pushed.
> >
> > Thanks for committing this.
> >
> > The updated patch has the changes for the above comments.
> >
>
> Thank you for updating the patch.
>
> I think it doesn't work well as "GRANT OPTION FOR" is complemented
> twice. For example,
>
> =# alter default privileges for user masahiko revoke [tab]
> ALL               DELETE            GRANT OPTION FOR  MAINTAIN
>  SELECT            TRUNCATE          USAGE
> CREATE            EXECUTE           INSERT            REFERENCES
>  TRIGGER           UPDATE
> =# alter default privileges for user masahiko revoke grant option for [tab]
> ALL               DELETE            GRANT OPTION FOR  MAINTAIN
>  SELECT            TRUNCATE          USAGE
> CREATE            EXECUTE           INSERT            REFERENCES
>  TRIGGER           UPDATE

Thanks for finding this issue, the attached v5 version patch has the
fix for the same.

Regards,
Vignesh