As you may have noticed, MySQL 8.0.16 has been released today !

One of the major long expected feature is the support of CHECK contraints .

My colleague, Dave Stokes, already posted an article explaining how this works.

In this post, I wanted to show how we could take advantage of this new feature to validate JSON values.

Let’s take the following example:

So we have a collection of documents representing rates from a user on some episodes. Now, I expect that the value for the rating should be between 0 and …

Dear MySQL users,

MySQL Shell 8.0.16 is a maintenance release of MySQL Shell 8.0 Series (a
component of the MySQL Server). The MySQL Shell is provided under
Oracle’s dual-license.

MySQL Shell 8.0 is highly recommended for use with MySQL Server 8.0 and
5.7. Please upgrade to MySQL Shell 8.0.16.

MySQL Shell is an interactive JavaScript, Python and SQL console
interface, supporting development and administration for the MySQL
Server. It provides APIs implemented in JavaScript and Python that
enable you to work with MySQL InnoDB cluster and use MySQL as a document
store.

The AdminAPI enables you to work with MySQL InnoDB cluster, providing an
integrated solution for high availability and scalability using InnoDB
based MySQL databases, without requiring advanced MySQL expertise. For
more information about how to configure and work with …

Dear MySQL users,

MySQL Connector/J Version 8.0.16 is the GA release of the 8.0
branch of MySQL Connector/J. It is suitable for use with MySQL Server
versions 8.0, 5.7 and 5.6. It supports the Java Database
Connectivity (JDBC) 4.2 API, and implements the X DevAPI.

This release includes the following new features and changes, also
described in more detail on

https://dev.mysql.com/doc/relnotes/connector-j/8.0/en/news-8-0-16.html

As always, we recommend that you check the “CHANGES” file in the
download archive to be aware of changes in behavior that might affect
your application.

To download MySQL Connector/J 8.0.16 GA, see the “Generally Available
(GA) Releases” tab at http://dev.mysql.com/downloads/connector/j/

Enjoy!

———————————————————————–

Changes in MySQL Connector/J …

Dear MySQL users,

MySQL Connector/ODBC 8.0.16 is a new version in the MySQL Connector/ODBC 8.0 series,
the ODBC driver for the MySQL Server.

The available downloads include both a Unicode driver and an ANSI driver based on the
same modern codebase. Please select the driver type you need based on the type of your
application – Unicode or ANSI. Server-side prepared statements are enabled by default.
It is suitable for use with the latest MySQL server version 8.0.

This release of the MySQL ODBC driver is conforming to the ODBC 3.8 specification.
It contains implementations of key 3.8 features, including self-identification
as a ODBC 3.8 driver, streaming of output parameters (supported for binary types
only), and support of the SQL_ATTR_RESET_CONNECTION connection attribute (for the
Unicode driver only).

The release is now available in source and binary form …

Before MySQL 8.0.16 you could put constraint checks into your Data Definition Language (DDL) when creating tables but the server ignored them.  There was much gnashing of teeth as taunts of "It is not a real database" from other databases taunted the MySQL Community. 
 
But with 8.0.16 this has all changed. You can now have your data constraints checked by the server. Below is an example table with two constraints.

mysql>CREATE TABLE parts 
            (id int, cost decimal(5,2) not null check (cost > 0),
             price decimal(5,2) not null check (price > 1.0)
          );
Query OK, 0 rows affected (0.09 sec)

mysql> insert into parts (id,cost,price) values …

Dear MySQL users,

MySQL Connector/NET 8.0.16 is the fourth version to support
Entity Framework Core 2.1 and the sixth general availability release
of MySQL Connector/NET to add support for the new X DevAPI, which
enables application developers to write code that combines the
strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing traditional SQL.

To learn more about how to write applications using the X DevAPI, see
http://dev.mysql.com/doc/x-devapi-userguide/en/index.html. For more
information about how the X DevAPI is implemented in Connector/NET, see
http://dev.mysql.com/doc/dev/connector-net. NuGet packages provide functionality at a …

Dear MySQL users,

MySQL Connector/Node.js is a new Node.js driver for use with the X
DevAPI. This release, v8.0.16, is a maintenance release of the
MySQL Connector/Node.js 8.0 series.

The X DevAPI enables application developers to write code that combines
the strengths of the relational and document models using a modern,
NoSQL-like syntax that does not assume previous experience writing
traditional SQL.

MySQL Connector/Node.js can be downloaded through npm (see
https://www.npmjs.com/package/@mysql/xdevapi for details) or from
https://dev.mysql.com/downloads/connector/nodejs/.

To learn more about how to write applications using the X DevAPI, see
http://dev.mysql.com/doc/x-devapi-userguide/en/. For more …

Dear MySQL users,

MySQL Connector/C++ 8.0.16 is a new release version of the MySQL Connector/C++ 8.0 series.

Connector/C++ 8.0 can be used to access MySQL implementing Document Store or in a traditional way, using SQL queries. It allows writing both C++ and plain C applications using X DevAPI and X DevAPI for C. It also supports the legacy API of Connector/C++ 1.1 based on JDBC4.

To learn more about how to write applications using X DevAPI, see “X DevAPI User Guide” at

https://dev.mysql.com/doc/x-devapi-userguide/en/

See also “X DevAPI Reference” at

https://dev.mysql.com/doc/dev/connector-cpp/devapi_ref.html

and “X DevAPI for C Reference” at

…

Please join Percona’s Principal Support Engineer Sveta Smirnova as she presents Billion Goods in Few Categories: How Histograms Save a Life?

Watch the Recorded Webinar

We store data with the intention to use it: search, retrieve, group, sort, etc. To perform these actions effectively, MySQL storage engines index data and communicate statistics with the Optimizer when it compiles a query execution plan. This approach works perfectly well unless your data distribution is uneven.

Last year I worked on several tickets where data followed …

MySQL Server 8.0.16, 5.7.26 and 5.6.44, new versions of the popular Open Source Database Management System, have been released. These releases are recommended for use on production systems. For an overview of what’s new, please see http://dev.mysql.com/doc/refman/8.0/en/mysql-nutshell.html http://dev.mysql.com/doc/refman/5.7/en/mysql-nutshell.html http://dev.mysql.com/doc/refman/5.6/en/mysql-nutshell.html For information on installing the release on new servers, please see the MySQL installation documentation at […]