SQL Shrink datafile

USE
GO
DBCC SHRINKFILE (<logical name>, size)
GO

—- Exemplo 1

USE MYBD
GO
DBCC SHRINKFILE (MYBD_Data, 65426)
GO

—- Exemplo 2
DBCC SHRINKFILE ( databasename_Log, 1)

obs:
Para saber o logical name, connecte na base e execute o comando sp_helpfile.

use MYDB
go
sp_helpfile