MySQL 5.6.21: A New Step Forward（mysql5.6.21）

MySQL 5.6.21 is a new version of the popular database system, released on January 5th, 2021.

It brings a number of new features and improvements to the database, making it easier and more efficient to use. The major focus of this version is on enhancing performance, scalability and security.

It has a new data dictionary that makes it easier to manage and retrieve records. This makes it easy to share data between different databases. There is also a host of new SQL commands that make it easier to work with large amounts of data. One example is the new CREATE TABLE IF NOT EXISTS command that allows the creating of new tables with the same syntax as existing tables.

The release also brings in improved replication performance and more reliable replication across multiple MySQL systems. There is also a new query optimizer which makes the database faster and more efficient.

In addition to the new features, a lot of existing features have been improved as well. The storage engines have been improved, so they can effectively handle larger amounts of data. Support for SSL/TLS has been enhanced, making it easier and more secure to connect to MySQL databases.

The system is also more secure. The new release implements support for the SHA-2 password implementation, which is a much more secure form of authentication. This ensures that important passwords and data stored in the database remains secure at all times.

Overall, MySQL 5.6.21 is an important step forward for the popular database system. With its focus on performance, scalability and security, it is sure to make using the database much easier and more efficient for everyone.

// Create Table If Not Exists Example
CREATE TABLE IF NOT EXISTS table_name
(
    column1 datatype,
    column2 datatype,
    column3 datatype,
   ....
);