Question

I have a filled SDF database file, I need to clean every record of tables. But if I do it by hand, Primary keys will not start with 1 after add record in table. And records will create with id (for example 4091+). So, how can I delete all data and set all primary keys to 1.

My database is too large and have many associations, because of this I cannot just delete all tables and create new. It takes a lot of time.

Sorry for my English.

Thank you.

Answer 1

You have to truncate the table…

TRUNCATE TABLE tbl_name

Truncate deletes all the record along with resetting the id equal to 0.

If TRUNCATE not available in your database, you can simply delete the record

DELETE from tbl_name

and reset the Identity column in following way:

ALTER TABLE tbl_name ALTER COLUMN id IDENTITY (1,1)