Does TRUNCATE maintain log?

Does TRUNCATE maintain log?

TRUNCATE just removes all of the data in one swoop, not significantly affecting the transaction log (certainly not enough to allow a rollback) and not executing triggers.

How do I shrink a MySQL log file?

To shrink the log in SSMS, right click the database, choose Tasks, Shrink, Files:

1. On the Shrink File window, change the File Type to Log.
2. Shrink the log using TSQL.
3. DBCC SHRINKFILE (AdventureWorks2012_log, 1)

What TRUNCATE will do in MySQL?

TRUNCATE TABLE empties a table completely. It requires the DROP privilege. Logically, TRUNCATE TABLE is similar to a DELETE statement that deletes all rows, or a sequence of DROP TABLE and CREATE TABLE statements. To achieve high performance, TRUNCATE TABLE bypasses the DML method of deleting data.

Does truncate drop table?

TRUNCATE TABLE is similar to DELETE , but this operation is a DDL (Data Definition Language) command. It also deletes records from a table without removing table structure, but it doesn’t use the WHERE clause.

How do I truncate a log file?

Truncate the transaction log

1. Right-click the database and select Properties -> Options.
2. Set the recovery model to Simple and exit the menu.
3. Right-click the database again and select Tasks -> Shrink -> Files.
4. Change the type to Log .
5. Under Shrink action, select Reorganize pages before releasing unused space and click OK.

How do I TRUNCATE a table in SQL?

How to truncate MySQL tables from the CLI

1. Log in to your hosting account using SSH: mysql -u [username] -p [database_name) For example: mysql -u johndoe -p data_mysite.
2. Enter your password.
3. Execute: truncate table [table_name]

What is difference between DROP TABLE and TRUNCATE table?

In SQL, the DROP command is used to remove the whole database or table indexes, data, and more. Whereas the TRUNCATE command is used to remove all the rows from the table.

What is table truncation in MySQL?

If specified, it is the name of the database. The table that you wish to truncate. When you truncate a table, the AUTO_INCREMENT counters on the table will be reset. MySQL truncates the table by dropping and creating the table. Thus, the DELETE triggers for the table do not fire during the truncation.

What is the difference between delete and truncate in MySQL?

The MySQL TRUNCATE TABLE statement allows you to delete all data in a table. Logically, the TRUNCATE TABLE statement is like a DELETE statement without a WHERE clause that deletes all rows from a table, or a sequence of DROP TABLE and CREATE TABLE statements. However, the TRUNCATE TABLE statement is more efficient than the DELETE statement

What is the use of truncate in SQL?

TRUNCATE is a Data Description Language (DDL) command which locks the table for deletion but not the rows. TRUNCATE removes all data in table. So you cannot specify WHERE clause in TRUNCATE statement.

Can the TRUNCATE TABLE statement be rolled back?

Warning: If you truncate a table, the TRUNCATE TABLE statement can not be rolled back. The syntax for the TRUNCATE TABLE statement in MySQL is: