Delete all data in SQL Server database

Question

How I can delete all records from all tables of my database? Can I do it with one SQL command or I need for one SQL command per one table?

Answer 1

Usually I will just use the undocumented proc sp_MSForEachTable

-- disable referential integrity
EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' 
GO 

EXEC sp_MSForEachTable 'TRUNCATE TABLE ?' 
GO 

-- enable referential integrity again 
EXEC sp_MSForEachTable 'ALTER TABLE ? CHECK CONSTRAINT ALL' 
GO

See also: Delete all data in database (when you have FKs)