Query Active Directory Users From SQL Server via ADSI Linked Server

create_adsi_linked_server.sql

USE [master]
GO
EXEC master.dbo.sp_addlinkedserver @server = N'ADSI', @srvproduct=N'Active Directory Service Interfaces', @provider=N'ADSDSOObject', @datasrc=N'adsdatasource'
EXEC master.dbo.sp_addlinkedsrvlogin @rmtsrvname=N'ADSI',@useself=N'False',@locallogin=NULL,@rmtuser=N'domain\user_acc',@rmtpassword='someawesomepassword'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'collation compatible',  @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'data access', @optvalue=N'true'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'dist', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'pub', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'rpc', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'rpc out', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'sub', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'connect timeout', @optvalue=N'0'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'collation name', @optvalue=null
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'lazy schema validation',  @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'query timeout', @optvalue=N'0'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'use remote collation',  @optvalue=N'true'
GO
EXEC master.dbo.sp_serveroption @server=N'ADSI', @optname=N'remote proc transaction promotion', @optvalue=N'true'
GO

search_ldap_from_sql.sql

SELECT * FROM OpenQuery (
ADSI,
'SELECT pager, displayName, telephoneNumber, sAMAccountName,
mail, mobile, facsimileTelephoneNumber, department, physicalDeliveryOfficeName, givenname
FROM ''LDAP://DOMAIN-DC-SVR/CN=Users,DC=DOMAIN,DC=COM''
WHERE objectClass = ''User''
')