USE [TestDb]
GO
ALTER DATABASE [TestDb] SET RECOVERY SIMPLE WITH NO_WAIT
DBCC SHRINKFILE([TestDb_Log], 1)
ALTER DATABASE [TestDb] SET RECOVERY FULL WITH NO_WAIT
GO
Where TestDB, is the database name, and TestDB_Log is the SQL Log file name.
USE [TestDb]
GO
ALTER DATABASE [TestDb] SET RECOVERY SIMPLE WITH NO_WAIT
DBCC SHRINKFILE([TestDb_Log], 1)
ALTER DATABASE [TestDb] SET RECOVERY FULL WITH NO_WAIT
GO
Where TestDB, is the database name, and TestDB_Log is the SQL Log file name.