What is the difference between truncate and drop table




















It is used only for deleting data from a table, not to remove the table from the database. If you want to remove specific records, use WHERE with filtering conditions, as in the second example.

After this query, the table product will be empty. It can remove one, some, or all rows in a table. It can be executed for any row change or when all rows are removed. DROP statement is used to delete a table and its data permanently.

I hope you enjoyed this article. Thanks for reading this article! View All. Arjun Panwar Updated date Aug 31, In this tutorial, I am going to explain the delete, truncate, and drop statements of MySQL with various examples. SQL Server stores data of a table in the pages. The truncate command deletes rows by deallocating the pages.

Last Updated: 7 days ago — Co-authors : 8 — Users : 8. Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email. Home Answers About. Sign in. Forgot your password? Get help. Password recovery. Home English What is the difference between drop table and truncate table? English General Lifestyle. Beside this, What is the difference between truncate and delete? At least in the case of Oracle, it resets the high water mark.

This is basically a dereferencing of the data and allows the db to reuse it for something else. Delete Statement delete table rows and return the number of rows is deleted from the table. The operation cannot be rolled back Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Collectives on Stack Overflow. Learn more. Difference between drop table and truncate table? Ask Question. Asked 13 years, 1 month ago. Active 10 months ago. Viewed k times. Improve this question. Brian G Brian G If you truncate the table, MySQL doesn't free the space of the hard disk.

If you want your storage back, you should drop the table without truncating it. Add a comment. Active Oldest Votes. Improve this answer. JoshL JoshL Also, truncating a table resets the identity seed. This can be helpful in testing because you can truncate your table and insert data and know what the identity values are going to be each time.

You could do that if you just deleted all data in the table. Just an additional two cents. Man, there's a lot more to it than this you know ; — David Aldridge. This is the key difference. That it is many faster as the other both. Horcrux7 Horcrux7 SolutionYogi Nathan Feger Nathan Feger It logs deallocation of the pages.



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