'\" t .\" Title: REVOKE .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets vsnapshot .\" Date: 2021 .\" Manual: PostgreSQL 13.4 Documentation .\" Source: PostgreSQL 13.4 .\" Language: English .\" .TH "REVOKE" "7" "2021" "PostgreSQL 13.4" "PostgreSQL 13.4 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" REVOKE \- remove access privileges .SH "SYNOPSIS" .sp .nf REVOKE [ GRANT OPTION FOR ] { { SELECT | INSERT | UPDATE | DELETE | TRUNCATE | REFERENCES | TRIGGER } [, \&.\&.\&.] | ALL [ PRIVILEGES ] } ON { [ TABLE ] \fItable_name\fR [, \&.\&.\&.] | ALL TABLES IN SCHEMA \fIschema_name\fR [, \&.\&.\&.] } FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { { SELECT | INSERT | UPDATE | REFERENCES } ( \fIcolumn_name\fR [, \&.\&.\&.] ) [, \&.\&.\&.] | ALL [ PRIVILEGES ] ( \fIcolumn_name\fR [, \&.\&.\&.] ) } ON [ TABLE ] \fItable_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { { USAGE | SELECT | UPDATE } [, \&.\&.\&.] | ALL [ PRIVILEGES ] } ON { SEQUENCE \fIsequence_name\fR [, \&.\&.\&.] | ALL SEQUENCES IN SCHEMA \fIschema_name\fR [, \&.\&.\&.] } FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { { CREATE | CONNECT | TEMPORARY | TEMP } [, \&.\&.\&.] | ALL [ PRIVILEGES ] } ON DATABASE \fIdatabase_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { USAGE | ALL [ PRIVILEGES ] } ON DOMAIN \fIdomain_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { USAGE | ALL [ PRIVILEGES ] } ON FOREIGN DATA WRAPPER \fIfdw_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { USAGE | ALL [ PRIVILEGES ] } ON FOREIGN SERVER \fIserver_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { EXECUTE | ALL [ PRIVILEGES ] } ON { { FUNCTION | PROCEDURE | ROUTINE } \fIfunction_name\fR [ ( [ [ \fIargmode\fR ] [ \fIarg_name\fR ] \fIarg_type\fR [, \&.\&.\&.] ] ) ] [, \&.\&.\&.] | ALL { FUNCTIONS | PROCEDURES | ROUTINES } IN SCHEMA \fIschema_name\fR [, \&.\&.\&.] } FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { USAGE | ALL [ PRIVILEGES ] } ON LANGUAGE \fIlang_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { { SELECT | UPDATE } [, \&.\&.\&.] | ALL [ PRIVILEGES ] } ON LARGE OBJECT \fIloid\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { { CREATE | USAGE } [, \&.\&.\&.] | ALL [ PRIVILEGES ] } ON SCHEMA \fIschema_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { CREATE | ALL [ PRIVILEGES ] } ON TABLESPACE \fItablespace_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ GRANT OPTION FOR ] { USAGE | ALL [ PRIVILEGES ] } ON TYPE \fItype_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ CASCADE | RESTRICT ] REVOKE [ ADMIN OPTION FOR ] \fIrole_name\fR [, \&.\&.\&.] FROM \fIrole_specification\fR [, \&.\&.\&.] [ GRANTED BY \fIrole_specification\fR ] [ CASCADE | RESTRICT ] where \fIrole_specification\fR can be: [ GROUP ] \fIrole_name\fR | PUBLIC | CURRENT_USER | SESSION_USER .fi .SH "DESCRIPTION" .PP The \fBREVOKE\fR command revokes previously granted privileges from one or more roles\&. The key word PUBLIC refers to the implicitly defined group of all roles\&. .PP See the description of the \fBGRANT\fR(7) command for the meaning of the privilege types\&. .PP Note that any particular role will have the sum of privileges granted directly to it, privileges granted to any role it is presently a member of, and privileges granted to PUBLIC\&. Thus, for example, revoking SELECT privilege from PUBLIC does not necessarily mean that all roles have lost SELECT privilege on the object: those who have it granted directly or via another role will still have it\&. Similarly, revoking SELECT from a user might not prevent that user from using SELECT if PUBLIC or another membership role still has SELECT rights\&. .PP If GRANT OPTION FOR is specified, only the grant option for the privilege is revoked, not the privilege itself\&. Otherwise, both the privilege and the grant option are revoked\&. .PP If a user holds a privilege with grant option and has granted it to other users then the privileges held by those other users are called dependent privileges\&. If the privilege or the grant option held by the first user is being revoked and dependent privileges exist, those dependent privileges are also revoked if CASCADE is specified; if it is not, the revoke action will fail\&. This recursive revocation only affects privileges that were granted through a chain of users that is traceable to the user that is the subject of this REVOKE command\&. Thus, the affected users might effectively keep the privilege if it was also granted through other users\&. .PP When revoking privileges on a table, the corresponding column privileges (if any) are automatically revoked on each column of the table, as well\&. On the other hand, if a role has been granted privileges on a table, then revoking the same privileges from individual columns will have no effect\&. .PP When revoking membership in a role, GRANT OPTION is instead called ADMIN OPTION, but the behavior is similar\&. This form of the command also allows a GRANTED BY option, but that option is currently ignored (except for checking the existence of the named role)\&. Note also that this form of the command does not allow the noise word GROUP in \fIrole_specification\fR\&. .SH "NOTES" .PP A user can only revoke privileges that were granted directly by that user\&. If, for example, user A has granted a privilege with grant option to user B, and user B has in turn granted it to user C, then user A cannot revoke the privilege directly from C\&. Instead, user A could revoke the grant option from user B and use the CASCADE option so that the privilege is in turn revoked from user C\&. For another example, if both A and B have granted the same privilege to C, A can revoke their own grant but not B\*(Aqs grant, so C will still effectively have the privilege\&. .PP When a non\-owner of an object attempts to \fBREVOKE\fR privileges on the object, the command will fail outright if the user has no privileges whatsoever on the object\&. As long as some privilege is available, the command will proceed, but it will revoke only those privileges for which the user has grant options\&. The \fBREVOKE ALL PRIVILEGES\fR forms will issue a warning message if no grant options are held, while the other forms will issue a warning if grant options for any of the privileges specifically named in the command are not held\&. (In principle these statements apply to the object owner as well, but since the owner is always treated as holding all grant options, the cases can never occur\&.) .PP If a superuser chooses to issue a \fBGRANT\fR or \fBREVOKE\fR command, the command is performed as though it were issued by the owner of the affected object\&. Since all privileges ultimately come from the object owner (possibly indirectly via chains of grant options), it is possible for a superuser to revoke all privileges, but this might require use of CASCADE as stated above\&. .PP \fBREVOKE\fR can also be done by a role that is not the owner of the affected object, but is a member of the role that owns the object, or is a member of a role that holds privileges WITH GRANT OPTION on the object\&. In this case the command is performed as though it were issued by the containing role that actually owns the object or holds the privileges WITH GRANT OPTION\&. For example, if table t1 is owned by role g1, of which role u1 is a member, then u1 can revoke privileges on t1 that are recorded as being granted by g1\&. This would include grants made by u1 as well as by other members of role g1\&. .PP If the role executing \fBREVOKE\fR holds privileges indirectly via more than one role membership path, it is unspecified which containing role will be used to perform the command\&. In such cases it is best practice to use \fBSET ROLE\fR to become the specific role you want to do the \fBREVOKE\fR as\&. Failure to do so might lead to revoking privileges other than the ones you intended, or not revoking anything at all\&. .PP See Section\ \&5.7 for more information about specific privilege types, as well as how to inspect objects\*(Aq privileges\&. .SH "EXAMPLES" .PP Revoke insert privilege for the public on table films: .sp .if n \{\ .RS 4 .\} .nf REVOKE INSERT ON films FROM PUBLIC; .fi .if n \{\ .RE .\} .PP Revoke all privileges from user manuel on view kinds: .sp .if n \{\ .RS 4 .\} .nf REVOKE ALL PRIVILEGES ON kinds FROM manuel; .fi .if n \{\ .RE .\} .sp Note that this actually means \(lqrevoke all privileges that I granted\(rq\&. .PP Revoke membership in role admins from user joe: .sp .if n \{\ .RS 4 .\} .nf REVOKE admins FROM joe; .fi .if n \{\ .RE .\} .SH "COMPATIBILITY" .PP The compatibility notes of the \fBGRANT\fR(7) command apply analogously to \fBREVOKE\fR\&. The keyword RESTRICT or CASCADE is required according to the standard, but PostgreSQL assumes RESTRICT by default\&. .SH "SEE ALSO" \fBGRANT\fR(7), ALTER DEFAULT PRIVILEGES (\fBALTER_DEFAULT_PRIVILEGES\fR(7))