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Allow GRANTED BY clause in normal GRANT and REVOKE statements

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The SQL standard allows a GRANTED BY clause on GRANT and
REVOKE (privilege) statements that can specify CURRENT_USER or
CURRENT_ROLE.  In PostgreSQL, both of these are the default behavior.
Since we already have all the parsing support for this for the
GRANT (role) statement, we might as well add basic support for this
for the privilege variant as well.  This allows us to check off SQL
feature T332.  In the future, perhaps more interesting things could be
done with this, too.

Reviewed-by: Simon Riggs <simon@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/flat/f2feac44-b4c5-f38f-3699-2851d6a76dc9@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2021-01-30 09:41:44 +01:00
parent 7da83415e5
commit 6aaaa76bb4
10 changed files with 71 additions and 13 deletions
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13
src/backend/parser/gram.y
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@@ -6772,7 +6772,7 @@ opt_from_in: from_in
*****************************************************************************/
GrantStmt: GRANT privileges ON privilege_target TO grantee_list
opt_grant_grant_option
opt_grant_grant_option opt_granted_by
{
GrantStmt *n = makeNode(GrantStmt);
n->is_grant = true;
@@ -6782,13 +6782,14 @@ GrantStmt: GRANT privileges ON privilege_target TO grantee_list
n->objects = ($4)->objs;
n->grantees = $6;
n->grant_option = $7;
n->grantor = $8;
$$ = (Node*)n;
}
;
RevokeStmt:
REVOKE privileges ON privilege_target
FROM grantee_list opt_drop_behavior
FROM grantee_list opt_granted_by opt_drop_behavior
{
GrantStmt *n = makeNode(GrantStmt);
n->is_grant = false;
@@ -6798,11 +6799,12 @@ RevokeStmt:
n->objtype = ($4)->objtype;
n->objects = ($4)->objs;
n->grantees = $6;
n->behavior = $7;
n->grantor = $7;
n->behavior = $8;
$$ = (Node *)n;
}
| REVOKE GRANT OPTION FOR privileges ON privilege_target
FROM grantee_list opt_drop_behavior
FROM grantee_list opt_granted_by opt_drop_behavior
{
GrantStmt *n = makeNode(GrantStmt);
n->is_grant = false;
@@ -6812,7 +6814,8 @@ RevokeStmt:
n->objtype = ($7)->objtype;
n->objects = ($7)->objs;
n->grantees = $9;
n->behavior = $10;
n->grantor = $10;
n->behavior = $11;
$$ = (Node *)n;
}
;