Six years ago I wrote a common lookup post to illustrate the effectiveness of things used throughout your applications. Now, I’m updating my student image with a more complete solution to show how to avoid update anomalies.

In the prior post, I used a while loop in PHP, like the following:

do {
      ...
} while($stmt->next_result());

Using PHP Version 7.3.8 and MySQL 8.0.16, that now raises the following error message:

Strict Standards: mysqli_stmt::next_result(): There is no next result set. Please, call mysqli_stmt_more_results()/mysqli_stmt::more_results() to check whether to call this function/method in /var/www/html/app/library.inc on line 81

You can see this type of error when you set the following parameters in your file during testing:

ini_set('display_errors',1); …

Somebody didn’t like the MySQLi Update Query example on the tutorialspoint.com website because it use the procedure mysqli_query style. Here’s a simple example of using the object-oriented method version. More or less, instead of query it uses the more intuitive execute() method.

The update_member function contains the logic and below it is a call to the test the function. It relies on a MySQLCredentials.inc file that contains the hostname, user name, password, and database name. You can create create member table, like my example in MySQL 8, or any other table in your MySQL database.

<?php /*
||  Function Name: update_member
*/
function update_member($account_number, $member_type, …

Percona announces the release of Percona Toolkit 3.1.0 on September 13, 2019.

Percona Toolkit is a collection of advanced open-source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL®, MongoDB®, PostgreSQL® and system tasks that are too difficult or complex to perform manually. With over 1,000,000 downloads, Percona Toolkit supports Percona Server for MySQL, MySQL, MariaDB, PostgreSQL, Percona Server for MongoDB, and MongoDB.

Percona Toolkit, like all Percona software, is free and open source. You can download packages  …

.NET Core 3 .NET Core was presented by Microsoft in 2016, but its 1.x versions had limited set of features comparing to Full .NET Framework. Since then .NET Core has been drastically improved. .NET Core 2.0 has a significant part of Full .NET Framework features and includes new functionality and significant performance optimizations. This year, […]

If you use replication with MySQL, if you need a backup, if you need a spare copy of a system for testing and for many other reasons you need a way to make a copy of your MySQL system. In the past you could make a copy in various ways: using a cold file system … Continue reading MySQL 8.0.17+: Cloning is now much easier

The post MySQL 8.0.17+: Cloning is now much easier first appeared on Simon J Mudd's Blog.

In MySQL 8.0.17 there have been a lot of updates to the MySQL set of offerings. We’ve introduced Cloning into InnoDB Cluster 8.0.17, advances with the MySQL-Router in 8.0.17 and MySQL continues to expand its collection of automation managed features. When Group Replication was first introduced in MySQL 5.7.17, there was considerably less to manage… Read More »

In MySQL 8.0.17 there have been a lot of updates to the MySQL set of offerings. We’ve introduced Cloning into InnoDB Cluster 8.0.17, advances with the MySQL-Router in 8.0.17 and MySQL continues to expand its collection of automation managed features. When Group Replication was first introduced in MySQL 5.7.17, there was considerably less to manage right away compared… Read More »

Overview The Skinny

In this blog post, we explore the correct way to implement bi-directional Tungsten Replication between AWS Aurora and Tungsten Clustering for MySQL databases.

Background The Story

When we are approached by a prospect interested in using our solutions, we are proud of our pre-sales process by which that we engage at a very deep technical level to ensure the we provide the best possible solution to meet with the prospect’s requirements. This involves an in-depth hands-on POC, in addition to the significant time and effort we spend building and testing the solution architectures in our lab environment as part of the proposal process.

From time to time, we are presented with requirements that are not always quite so straight forward. Just recently we faced such a situation. A …

Last week I posted a blog on how to setup multi-source for MySQL 5.7 using GTID based replication, in this blog we will do the same using MySQL 8.0.

Most of the procedure are the same, there are only two things that we need to change are;
1) Procedure for creating the replication user.
2) Fetching the GTID value from the MySQL dumpfile.

1) Create replication user for MySQL 8
MySQL 8 uses a new authentication plugin so to create the replication user will differ from MySQL 5.7. The procedure for 5.7 was with:

mysql> CREATE USER 'repl_user'@'slave-host' IDENTIFIED BY 'repl_pass';
mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl_user'@'slave-host';

With MySQL 8 you need to create the user like:

mysql> CREATE USER …

Up to MySQL 8.0.16, to perform these tasks you could:
- Use MySQL Enterprise Backup :
- Use mysqldump

Starting with MySQL 8.0.17, the easiest and recommended method is to use the CLONE feature.

The post MySQL InnoDB Cluster - Easy Recovering and provisioning first appeared on dasini.net - Diary of a MySQL expert.