DENY (Transact-SQL)

Denies a permission to a principal. Prevents that principal from inheriting the permission through its group or role memberships.

Syntax

Simplified syntax for DENY
DENY { ALL [ PRIVILEGES ] }
      | permission [ ( column [ ,...n ] ) ] [ ,...n ]
      [ ON [ class :: ] securable ] TO principal [ ,...n ] 
      [ CASCADE] [ AS principal ]

Arguments

• ALL
  This option does not deny all possible permissions. Denying ALL is equivalent to denying the following permissions.

  • If the securable is a database, "ALL" means BACKUP DATABASE, BACKUP LOG, CREATE DATABASE, CREATE DEFAULT, CREATE FUNCTION, CREATE PROCEDURE, CREATE RULE, CREATE TABLE, and CREATE VIEW.
  • If the securable is a scalar function, "ALL" means EXECUTE and REFERENCES.
  • If the securable is a table-valued function, "ALL" means DELETE, INSERT, REFERENCES, SELECT, and UPDATE.
  • If the securable is a stored procedure, "ALL" means EXECUTE.
  • If the securable is a table, "ALL" means DELETE, INSERT, REFERENCES, SELECT, and UPDATE.
  • If the securable is a view, "ALL" means DELETE, INSERT, REFERENCES, SELECT, and UPDATE.

• PRIVILEGES
  Included for SQL-92 compliance. Does not change the behavior of ALL.

• permission
  The name of a permission. The valid mappings of permissions to securables are described in the sub-topics listed below.

• column
  Specifies the name of a column in a table on which permissions are being denied. The parentheses "()" are required.

• class
  Specifies the class of the securable on which the permission is being denied. The scope qualifier "::" is required.

• securable
  Specifies the securable on which the permission is being denied.

• TO principal
  The name of a principal. The principals to which permissions on a securable can be denied vary, depending on the securable. See the securable-specific topics listed below for valid combinations.

• CASCADE
  Indicates that the permission is denied to the specified principal and to all other principals to which the principal granted the permission. Required when the principal has the permission with GRANT OPTION.

• AS principal
  Specifies a principal from which the principal executing this statement derives its right to deny the permission.

Remarks

The full syntax of the DENY statement is complex. The diagram above has been simplified to draw attention to its structure. Complete syntax for denying permissions on specific securables is described in the topics listed below.

DENY will fail if CASCADE is not specified when denying permission to a principal that was granted that permission with GRANT OPTION specified.

Column-level permissions take precedence over object permissions. For example, if a deny permission is applied to a base object such as a table and then a grant permission is applied to one of the base object’s columns, the grantee of the permission will have access to the column in spite of the deny on the base object. However, to ensure that column-level permissions are present, they must be applied after permissions on the base object.

The sp_helprotect system stored procedure reports permissions on a database-level securable.

Permissions

The caller (or the principal specified with the AS option) must have either CONTROL permission on the securable, or a higher permission that implies CONTROL permission on the securable. If using the AS option, the specified principal must own the securable on which a permission is being denied.

Grantees of CONTROL SERVER permission, such as members of the sysadmin fixed server role, can deny any permission on any securable in the server. Grantees of CONTROL permission on the database, such as members of the db_owner fixed database role, can deny any permission on any securable in the database. Grantees of CONTROL permission on a schema can deny any permission on any object in the schema. If the AS clause is used, the specified principal must own the securable on which permissions are being denied.

Examples

See the following topics for securable-specific syntax.

See Also

Reference

DENY (Transact-SQL)
REVOKE (Transact-SQL)
sp_addgroup (Transact-SQL)
sp_addlogin (Transact-SQL)
sp_adduser (Transact-SQL)
sp_changegroup (Transact-SQL)
sp_changedbowner (Transact-SQL)
sp_dropgroup (Transact-SQL)
sp_dropuser (Transact-SQL)
sp_helpgroup (Transact-SQL)
sp_helprotect (Transact-SQL)
sp_helpuser (Transact-SQL)

Help and Information

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