How to Delete All Tables Data in a single query

How to Delete All Tables Data in a single query in SQL SERVER

use this query to delete data in all tables in sql server

- disable all constraints

EXEC sp_msforeachtable 'ALTER TABLE ? NOCHECK CONSTRAINT all'

-- delete data in all tables

EXEC sp_MSForEachTable 'DELETE FROM ?'

-- enable all constraints                                  

exec sp_msforeachtable 'ALTER TABLE ? WITH CHECK CHECK CONSTRAINT all'