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

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

Regards,

--
Masahiko Sawada
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