Show the Current Transaction Mode in MySQL

Q

How To Find Out the Current Transaction Mode in MySQL?

✍: FYIcenter.com

A

If you are not sure about your current transaction mode, you can use the "SELECT @@AUTOCOMMIT FROM DUAL" statement to find out as shown in the following tutorial exercise:

>\mysql\bin\mysql -u dev -piyf fyi

mysql> SELECT @@AUTOCOMMIT FROM DUAL;
+--------------+
| @@AUTOCOMMIT |
+--------------+
|            1 |
+--------------+
1 row in set (0.00 sec)

mysql> SET AUTOCOMMIT = 0;
Query OK, 0 rows affected (0.03 sec)

mysql> SELECT @@AUTOCOMMIT FROM DUAL;
+--------------+
| @@AUTOCOMMIT |
+--------------+
|            0 |
+--------------+
1 row in set (0.00 sec)

mysql> SET AUTOCOMMIT = 1;
Query OK, 0 rows affected (0.00 sec)

mysql> SELECT @@AUTOCOMMIT FROM DUAL;
+--------------+
| @@AUTOCOMMIT |
|            1 |
+--------------+
1 row in set (0.00 sec)

⇒ Start a New Transaction Explicitly in MySQL

⇐ Turn on and off Autocommit in MySQL

⇑ Transaction Management: Commit or Rollback in MySQL

⇑⇑ MySQL Database Tutorials

2016-10-17, 2123🔥, 0💬

Turn on and off Autocommit in MySQL
How To Switch between Autocommit-On and Autocommit-Off Modes in MySQL? By default, your connection session will be in Autocommit-On mode, where every server executable statement will start a new transaction, and end the transaction when the execution ends. Changes will be committed. So consider this... 2016-10-17, 2507🔥, 0💬

Ways to Start a New Transaction in MySQL
How To Start a New Transaction in MySQL? MySQL server offers two modes to manage transactions: Autocommit On - Default mode. Can be started with "SET AUTOCOMMIT = 1" command. In this mode, every single SQL statement is a new transaction. All changes will be committed at the end of the statement exec... 2016-10-17, 2498🔥, 0💬

Transaction Committed when START TRANSACTION Executed in MySQL
What Happens to the Current Transaction If a START TRANSACTION Is Executed in MySQL? If you are in a middle of a current transaction, and a START TRANSACTION command is executed, the current transaction will be committed and ended. All the database changes made in the current transaction will become... 2016-10-17, 2237🔥, 0💬

Ways to End the Current Transaction in MySQL
How To End the Current Transaction in MySQL? There are several ways the current transaction can be ended implicitly or explicitly: In "Autocommit On" mode, a single-statement transaction will be ended implicitly when the execution of the statement ends. Changes will be committed. Running the COMMIT ... 2016-10-17, 2234🔥, 0💬

Create a Table for Transaction Testing in MySQL
How To Create a Table for Transaction Testing in MySQL? If you want to learn transaction management, you should create a table with the InnoDB storage engine. The default storage engine MyISAM does not support the transaction concept. The tutorial exercise below shows you a good example of creating ... 2016-10-17, 2228🔥, 0💬

Rollback the Current Transaction in MySQL
How To Rollback the Current Transaction in MySQL? If you have used some DML statements updated some data objects, you find a problem with those updates, and you don't want those updates to be permanently recorded in the database, you can use the ROLLBACK command. It will remove all the database chan... 2016-10-17, 2216🔥, 0💬

Transaction Committed when DDL Statement Executed in MySQL
What Happens to the Current Transaction If a DDL Statement Is Executed in MySQL? If a DDL statement is executed, the current transaction will be committed and ended. All the database changes made in the current transaction will become permanent. This is called an implicit commit by a DDL statement. ... 2016-10-17, 2177🔥, 0💬

Show the Current Transaction Mode in MySQL
How To Find Out the Current Transaction Mode in MySQL? If you are not sure about your current transaction mode, you can use the "SELECT @@AUTOCOMMIT FROM DUAL" statement to find out as shown in the following tutorial exercise: >\mysql\bin\mysql -u dev -piyf fyi mysql> SELECT @@AUTOCOMM... 2016-10-17, 2124🔥, 0💬

Commit the Current Transaction in MySQL
How To Commit the Current Transaction in MySQL? If you have used some DML statements updated some data objects, and you want to have the updates to be permanently recorded in the database, you can use the COMMIT command. It will make all the database changes made in the current transaction become pe... 2016-10-17, 2085🔥, 0💬

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