sys-sql-logins-transact-sql.md

title	sys.sql_logins (Transact-SQL) | Microsoft Docs
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ms.date	01/20/2016
ms.prod	sql
ms.prod_service	database-engine, sql-database, pdw
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ms.technology	system-objects
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f1_keywords	sys.sql_logins_TSQL sql_logins_TSQL sys.sql_logins sql_logins
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helpviewer_keywords	sys.sql_logins catalog view
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author	VanMSFT
ms.author	vanto
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sys.sql_logins (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-asdb-xxxx-pdw-md]

Returns one row for every [!INCLUDEssNoVersion] authentication login.

Column name	Data type	Description
<inherited columns>	--	Inherits from sys.server_principals.
is_policy_checked	bit	Password policy is checked.
is_expiration_checked	bit	Password expiration is checked.
password_hash	varbinary(256)	Hash of SQL login password. Beginning with [!INCLUDEssSQL11], stored password information is calculated using SHA-512 of the salted password.

For a list of columns that this view inherits, see sys.server_principals (Transact-SQL). The columns owning_principal_id and is_fixed_role is not inherited from sys.server_principals.

Remarks

To view both [!INCLUDEssNoVersion] authentication logins and Windows authentication logins, see sys.server_principals (Transact-SQL).

When contained database users are enabled, connections can be made without logins. To identify those accounts, see sys.database_principals (Transact-SQL).

Permissions

Any [!INCLUDEssNoVersion] authentication login can see their own login name, and the sa login. To see other logins, requires ALTER ANY LOGIN, or a permission on the login.

[!INCLUDEssCatViewPerm] For more information, see Metadata Visibility Configuration.

See Also

Catalog Views (Transact-SQL)
Security Catalog Views (Transact-SQL)
Password Policy
Principals (Database Engine)