Azure SQL Serverではtruncate的なことはできない?

https://social.msdn.microsoft.com/Forums/azure/en-US/ceeae474-fb19-4282-a56b-c0718f06e9ab/sql-azure-identity-reseed?forum=ssdsgetstarted
    http://dba.stackexchange.com/questions/10594/dbcc-checkident-doesnt-work-for-reseeding-tables
    http://www.codeproject.com/Questions/398484/how-write-reseed-in-windows-azure