10 Articles recommended for rollback

The entire transaction can be written or revoked using a simple ROLLBACK and COMMIT statement with a reserved point. However, just for simple transactions to do this, more complex transactions may require partial commit or fallback. For example, the process of adding an order described earlier is a transaction. If an error occurs, you only need to return to the order line before you add it, and you do not have to fall back to the Customers table, if one exists. In order to support fallback partial transactions, placeholders must be placed in the appropriate location in the transaction block. This allows fallback to a placeholder if fallback is required. These placeholders are called retention points. In order to create placeholders, you can use the SavePoint statement as follows: Enter: SavePoint Deletel; Each reservation is given a unique name that identifies it so that when it is rolled back, MySQL knows where to fall back. In order to fall back to the retention point given in this example, the following can be done: input: rollback to Deletel; You can set as many retention points as you want in your MySQL code, the more

1.10 article Recommendations on commit

Summary: You can write or revoke an entire transaction using a simple ROLLBACK and COMMIT statement with a reserved point. However, just for simple transactions to do this, more complex transactions may require partial commit or fallback. For example, the process of adding an order described earlier is a transaction. If an error occurs, you only need to return to the order line before you add it, and you do not have to fall back to the Customers table, if one exists. In order to support fallback partial transactions, placeholders must be placed in the appropriate location in the transaction block. In this way, as ...

2. Detailed introduction to changing the default

Summary: You can write or revoke an entire transaction using a simple ROLLBACK and COMMIT statement with a reserved point. However, just for simple transactions to do this, more complex transactions may require partial commit or fallback. For example, the process of adding an order described earlier is a transaction. If an error occurs, you only need to return to the order line before you add it, and you do not have to fall back to the Customers table, if one exists. In order to support fallback partial transactions, placeholders must be placed in the appropriate location in the transaction block. In this way, as ...

3. mysql transaction-use a retention point and change the default commit behavior

Summary: You can write or revoke an entire transaction using a simple ROLLBACK and COMMIT statement with a reserved point. However, just for simple transactions to do this, more complex transactions may require partial commit or fallback. For example, the process of adding an order described earlier is a transaction. If an error occurs, you only need to return to the order line before you add it, and you do not have to fall back to the Customers table, if one exists. In order to support fallback partial transactions, placeholders must be placed in the appropriate location in the transaction block. This allows fallback to a placeholder if fallback is required.

4. mysql Transaction-rollback,commit usage

Introduction: Using rollback since we already know what transaction processing is, the following discussion deals with the issues involved in managing transactions. The key to managing transactions is to break down the group of SQL statements into logical blocks and specify when the data should be rolled back and when it should not be rolled back. MySQL uses the following statement to identify the start of a transaction:

5. Details of transaction handling in PDO

Summary: A transaction (transaction) consists of a sequence of queries and/or UPDATE statements. Begins a transaction with begin, start transaction, rollback rolls back the transaction, commits the transaction. After starting a transaction, you can have several SQL queries or UPDATE statements, and after a SQL submission executes, there should be a statement that determines whether the next step is rolled back, and if it is executed correctly, the transaction is finally committed. Once a transaction is rolled back, the database remains in the pre-transaction state. As if an edited file does not save the file to exit, or to maintain the original appearance of the document. So, a transaction can be considered an atomic operation, a SQL in a transaction, or a full

6. Getting started with MySQL transaction basics

Summary: What is MySQL transaction? Business, usually refers to the things to do or do. In computer terminology, it refers to a program execution unit (unit) that accesses and possibly updates various data items in a database. 2. What is the use of the case? Things are commonly used when working with multiple tables concurrently to ensure the integrity of the user's data. There are two main ways to deal with MySQL 1. Begin with Begin,rollback,commit to start a transaction roll

7. PHP MySQL Transaction processing instance

Summary: A transaction is required to meet 4 conditions (ACID): atomicity (autmic), consistency (consistency), isolation (isolation), persistence (durability) atomicity (autmic): The transaction is executed, to do "or not, Or do it all! ", which means that the transactional part is not allowed to execute. Even if the transaction can not be completed because of the failure, also eliminate the impact on the database when rollback! Consistency (consistency): transactional operations should cause the database to be consistent from one ...

8. PHP MySQL Transaction processing instance

Summary: A transaction is required to meet 4 conditions (ACID): atomicity (autmic), consistency (consistency), isolation (isolation), persistence (durability) atomicity (autmic): The transaction is executed, to do "or not, Or do it all! ", which means that the transactional part is not allowed to execute. Even if the transaction can not be completed because of the failure, also eliminate the impact on the database when rollback! Consistency (consistency): transactional operations should cause the database to be consistent from one ...

9. After starting a transaction in PHP, the program throws an exception without executing a commit and not executing the rollback MySQL transaction will be rolled back?

Introduction: Online Some people say that after opening a transaction SQL statement execution error or program error does not execute rollback, the next run will automatically commit the program error will not be rolled back rollback but some people say that if MySQL has no committed transactions, then this time Autocom ...

Nginx-About Phpmysql's business

Summary: The problem: I found that the transaction has no commit and no rollback, will automatically rollback the code example after the end of this HTTP request: {code ...} But wait until this request is over and the database record can be edited ... I would like to ask whether it is nginx or fpm or Phalco ...

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