![]() ![]() ![]() This example would truncate the table called products in the database called totn. Let's look at one more example where we prefix the table name with the database name.įor example: TRUNCATE TABLE totn.products The main difference between the two is that you can roll back the DELETE statement if you choose, but you can't roll back the TRUNCATE TABLE statement. It would be equivalent to the following DELETE statement in MySQL: DELETE FROM customers īoth of these statements would result in all data from the customers table being deleted. This example would truncate the table called customers and remove all records from that table. Let's look at an example of how to use the TRUNCATE TABLE statement in MySQL. In most cases, MySQL handles the process of table truncation a bit differently than other databases such as Oracle or SQL Server. The following SQL truncates the table Categories: Example. In Microsoft SQL Server 2000 and beyond in full recovery mode, every change to the database is logged, so TRUNCATE TABLE statements can be used for tables involved in log shipping.In MySQL, truncating a table is a fast way to clear out records from a table if you don't need to worry about rolling back. The TRUNCATE TABLE statement is used to delete the data inside a table, but not the table itself. The TRUNCATE TABLE command deletes the data inside a table, but not the table itself.In some computer systems, TRUNCATE TABLE resets the count of an Identity column back to the identity's seed.From there, you can remove the required ones. This could result in inconsistent data because ON DELETE/ ON UPDATE triggers would not fire. In MySQL, you can use the informationschema to get all the tables in a Database. ![]() With large buffer pools, where large can be anything > 32G, this full list. When a table space is truncated or dropped InnoDB scans the LRU and FLUSH (dirty pages) list and moves all the pages that belong to the truncated/dropped tablespace from the LRU/FLUSH list to the buffer pool FREE list.
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