1GRANT(7) PostgreSQL 12.6 Documentation GRANT(7)
2
6 GRANT - define access privileges
7
9 GRANT { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER }
10 [, ...] | ALL [ PRIVILEGES ] }
11 ON { [ TABLE ] table_name [, ...]
12 | ALL TABLES IN SCHEMA schema_name [, ...] }
13 TO role_specification [, ...] [ WITH GRANT OPTION ]
14 GRANT { { SELECT | INSERT | UPDATE | REFERENCES } ( column_name [, ...] )
16 [, ...] | ALL [ PRIVILEGES ] ( column_name [, ...] ) }
17 ON [ TABLE ] table_name [, ...]
18 TO role_specification [, ...] [ WITH GRANT OPTION ]
19 GRANT { { USAGE | SELECT | UPDATE }
21 [, ...] | ALL [ PRIVILEGES ] }
22 ON { SEQUENCE sequence_name [, ...]
23 | ALL SEQUENCES IN SCHEMA schema_name [, ...] }
24 TO role_specification [, ...] [ WITH GRANT OPTION ]
25 GRANT { { CREATE | CONNECT | TEMPORARY | TEMP } [, ...] | ALL [ PRIVILEGES ] }
27 ON DATABASE database_name [, ...]
28 TO role_specification [, ...] [ WITH GRANT OPTION ]
29 GRANT { USAGE | ALL [ PRIVILEGES ] }
31 ON DOMAIN domain_name [, ...]
32 TO role_specification [, ...] [ WITH GRANT OPTION ]
33 GRANT { USAGE | ALL [ PRIVILEGES ] }
35 ON FOREIGN DATA WRAPPER fdw_name [, ...]
36 TO role_specification [, ...] [ WITH GRANT OPTION ]
37 GRANT { USAGE | ALL [ PRIVILEGES ] }
39 ON FOREIGN SERVER server_name [, ...]
40 TO role_specification [, ...] [ WITH GRANT OPTION ]
41 GRANT { EXECUTE | ALL [ PRIVILEGES ] }
43 ON { { FUNCTION | PROCEDURE | ROUTINE } routine_name [ ( [ [ argmode ] [ arg_name ] arg_type [, ...] ] ) ] [, ...]
44 | ALL { FUNCTIONS | PROCEDURES | ROUTINES } IN SCHEMA schema_name [, ...] }
45 TO role_specification [, ...] [ WITH GRANT OPTION ]
46 GRANT { USAGE | ALL [ PRIVILEGES ] }
48 ON LANGUAGE lang_name [, ...]
49 TO role_specification [, ...] [ WITH GRANT OPTION ]
50 GRANT { { SELECT | UPDATE } [, ...] | ALL [ PRIVILEGES ] }
52 ON LARGE OBJECT loid [, ...]
53 TO role_specification [, ...] [ WITH GRANT OPTION ]
54 GRANT { { CREATE | USAGE } [, ...] | ALL [ PRIVILEGES ] }
56 ON SCHEMA schema_name [, ...]
57 TO role_specification [, ...] [ WITH GRANT OPTION ]
58 GRANT { CREATE | ALL [ PRIVILEGES ] }
60 ON TABLESPACE tablespace_name [, ...]
61 TO role_specification [, ...] [ WITH GRANT OPTION ]
62 GRANT { USAGE | ALL [ PRIVILEGES ] }
64 ON TYPE type_name [, ...]
65 TO role_specification [, ...] [ WITH GRANT OPTION ]
66 GRANT role_name [, ...] TO role_specification [, ...]
68 [ WITH ADMIN OPTION ]
69 [ GRANTED BY role_specification ]
70 where role_specification can be:
72 [ GROUP ] role_name
74 | PUBLIC
75 | CURRENT_USER
76 | SESSION_USER
77
79 The GRANT command has two basic variants: one that grants privileges on
80 a database object (table, column, view, foreign table, sequence,
81 database, foreign-data wrapper, foreign server, function, procedure,
82 procedural language, schema, or tablespace), and one that grants
83 membership in a role. These variants are similar in many ways, but they
84 are different enough to be described separately.
85 GRANT on Database Objects
87 This variant of the GRANT command gives specific privileges on a
88 database object to one or more roles. These privileges are added to
89 those already granted, if any.
90 The key word PUBLIC indicates that the privileges are to be granted to
92 all roles, including those that might be created later. PUBLIC can be
93 thought of as an implicitly defined group that always includes all
94 roles. Any particular role will have the sum of privileges granted
95 directly to it, privileges granted to any role it is presently a member
96 of, and privileges granted to PUBLIC.
97 If WITH GRANT OPTION is specified, the recipient of the privilege can
99 in turn grant it to others. Without a grant option, the recipient
100 cannot do that. Grant options cannot be granted to PUBLIC.
101 There is no need to grant privileges to the owner of an object (usually
103 the user that created it), as the owner has all privileges by default.
104 (The owner could, however, choose to revoke some of their own
105 privileges for safety.)
106 The right to drop an object, or to alter its definition in any way, is
108 not treated as a grantable privilege; it is inherent in the owner, and
109 cannot be granted or revoked. (However, a similar effect can be
110 obtained by granting or revoking membership in the role that owns the
111 object; see below.) The owner implicitly has all grant options for the
112 object, too.
113 The possible privileges are:
115 SELECT
117 INSERT
118 UPDATE
119 DELETE
120 TRUNCATE
121 REFERENCES
122 TRIGGER
123 CREATE
124 CONNECT
125 TEMPORARY
126 EXECUTE
127 USAGE
128 Specific types of privileges, as defined in Section 5.7.
129 TEMP
131 Alternative spelling for TEMPORARY.
132 ALL PRIVILEGES
134 Grant all of the privileges available for the object's type. The
135 PRIVILEGES key word is optional in PostgreSQL, though it is
136 required by strict SQL.
137 The FUNCTION syntax works for plain functions, aggregate functions, and
139 window functions, but not for procedures; use PROCEDURE for those.
140 Alternatively, use ROUTINE to refer to a function, aggregate function,
141 window function, or procedure regardless of its precise type.
142 There is also an option to grant privileges on all objects of the same
144 type within one or more schemas. This functionality is currently
145 supported only for tables, sequences, functions, and procedures. ALL
146 TABLES also affects views and foreign tables, just like the
147 specific-object GRANT command. ALL FUNCTIONS also affects aggregate
148 and window functions, but not procedures, again just like the
149 specific-object GRANT command. Use ALL ROUTINES to include procedures.
150 GRANT on Roles
152 This variant of the GRANT command grants membership in a role to one or
153 more other roles. Membership in a role is significant because it
154 conveys the privileges granted to a role to each of its members.
155 If WITH ADMIN OPTION is specified, the member can in turn grant
157 membership in the role to others, and revoke membership in the role as
158 well. Without the admin option, ordinary users cannot do that. A role
159 is not considered to hold WITH ADMIN OPTION on itself, but it may grant
160 or revoke membership in itself from a database session where the
161 session user matches the role. Database superusers can grant or revoke
162 membership in any role to anyone. Roles having CREATEROLE privilege can
163 grant or revoke membership in any role that is not a superuser.
164 If GRANTED BY is specified, the grant is recorded as having been done
166 by the specified role. Only database superusers may use this option,
167 except when it names the same role executing the command.
168 Unlike the case with privileges, membership in a role cannot be granted
170 to PUBLIC. Note also that this form of the command does not allow the
171 noise word GROUP in role_specification.
172
174 The REVOKE(7) command is used to revoke access privileges.
175 Since PostgreSQL 8.1, the concepts of users and groups have been
177 unified into a single kind of entity called a role. It is therefore no
178 longer necessary to use the keyword GROUP to identify whether a grantee
179 is a user or a group. GROUP is still allowed in the command, but it is
180 a noise word.
181 A user may perform SELECT, INSERT, etc. on a column if they hold that
183 privilege for either the specific column or its whole table. Granting
184 the privilege at the table level and then revoking it for one column
185 will not do what one might wish: the table-level grant is unaffected by
186 a column-level operation.
187 When a non-owner of an object attempts to GRANT privileges on the
189 object, the command will fail outright if the user has no privileges
190 whatsoever on the object. As long as some privilege is available, the
191 command will proceed, but it will grant only those privileges for which
192 the user has grant options. The GRANT ALL PRIVILEGES forms will issue a
193 warning message if no grant options are held, while the other forms
194 will issue a warning if grant options for any of the privileges
195 specifically named in the command are not held. (In principle these
196 statements apply to the object owner as well, but since the owner is
197 always treated as holding all grant options, the cases can never
198 occur.)
199 It should be noted that database superusers can access all objects
201 regardless of object privilege settings. This is comparable to the
202 rights of root in a Unix system. As with root, it's unwise to operate
203 as a superuser except when absolutely necessary.
204 If a superuser chooses to issue a GRANT or REVOKE command, the command
206 is performed as though it were issued by the owner of the affected
207 object. In particular, privileges granted via such a command will
208 appear to have been granted by the object owner. (For role membership,
209 the membership appears to have been granted by the containing role
210 itself.)
211 GRANT and REVOKE can also be done by a role that is not the owner of
213 the affected object, but is a member of the role that owns the object,
214 or is a member of a role that holds privileges WITH GRANT OPTION on the
215 object. In this case the privileges will be recorded as having been
216 granted by the role that actually owns the object or holds the
217 privileges WITH GRANT OPTION. For example, if table t1 is owned by role
218 g1, of which role u1 is a member, then u1 can grant privileges on t1 to
219 u2, but those privileges will appear to have been granted directly by
220 g1. Any other member of role g1 could revoke them later.
221 If the role executing GRANT holds the required privileges indirectly
223 via more than one role membership path, it is unspecified which
224 containing role will be recorded as having done the grant. In such
225 cases it is best practice to use SET ROLE to become the specific role
226 you want to do the GRANT as.
227 Granting permission on a table does not automatically extend
229 permissions to any sequences used by the table, including sequences
230 tied to SERIAL columns. Permissions on sequences must be set
231 separately.
232 See Section 5.7 for more information about specific privilege types, as
234 well as how to inspect objects' privileges.
235
237 Grant insert privilege to all users on table films:
238 GRANT INSERT ON films TO PUBLIC;
240 Grant all available privileges to user manuel on view kinds:
242 GRANT ALL PRIVILEGES ON kinds TO manuel;
244 Note that while the above will indeed grant all privileges if executed
246 by a superuser or the owner of kinds, when executed by someone else it
247 will only grant those permissions for which the someone else has grant
248 options.
249 Grant membership in role admins to user joe:
251 GRANT admins TO joe;
253
255 According to the SQL standard, the PRIVILEGES key word in ALL
256 PRIVILEGES is required. The SQL standard does not support setting the
257 privileges on more than one object per command.
258 PostgreSQL allows an object owner to revoke their own ordinary
260 privileges: for example, a table owner can make the table read-only to
261 themselves by revoking their own INSERT, UPDATE, DELETE, and TRUNCATE
262 privileges. This is not possible according to the SQL standard. The
263 reason is that PostgreSQL treats the owner's privileges as having been
264 granted by the owner to themselves; therefore they can revoke them too.
265 In the SQL standard, the owner's privileges are granted by an assumed
266 entity “_SYSTEM”. Not being “_SYSTEM”, the owner cannot revoke these
267 rights.
268 According to the SQL standard, grant options can be granted to PUBLIC;
270 PostgreSQL only supports granting grant options to roles.
271 The SQL standard allows the GRANTED BY option to be used in all forms
273 of GRANT. PostgreSQL only supports it when granting role membership,
274 and even then only superusers may use it in nontrivial ways.
275 The SQL standard provides for a USAGE privilege on other kinds of
277 objects: character sets, collations, translations.
278 In the SQL standard, sequences only have a USAGE privilege, which
280 controls the use of the NEXT VALUE FOR expression, which is equivalent
281 to the function nextval in PostgreSQL. The sequence privileges SELECT
282 and UPDATE are PostgreSQL extensions. The application of the sequence
283 USAGE privilege to the currval function is also a PostgreSQL extension
284 (as is the function itself).
285 Privileges on databases, tablespaces, schemas, and languages are
287 PostgreSQL extensions.
288
290 REVOKE(7), ALTER DEFAULT PRIVILEGES (ALTER_DEFAULT_PRIVILEGES(7))
291PostgreSQL 12.6 2021 GRANT(7)