MySQL
WeSQL Introduction – MySQL running on S3
I recently became aware of WeSQL . A MySQL-compatible database that separates compute and storage, using S3 as the storage layer. The product uses a columnar format by default which is significantly more space-efficient than InnoDB.
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Managing SQL Drift: Ensuring Stability in Database Transitions
SQL drift is a significant challenge that occurs when SQL statements from an existing system produce unexpected results after migration to a new environment or system. These issues manifest in several critical ways: SQL statements may generate new execution errors, experience significant performance degradation, or yield differences in data integrity.
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RDS MySQL Aurora 3.07.0 is unusable for upgrades
Yesterday I detailed an incompatible breakage with RDS MySQL Aurora 3.06.0 , and one option stated is to upgrade to the just released 3.07.0. Turns out that does not work. It is not possible to upgrade any version of AWS RDS MySQL Aurora 3.
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Database testing for all version changes (including minor versions)
We know that SQL statement compatibility can change with major database version upgrades and that you should adequately test for them. But what about minor version upgrades? It is dangerous to assume that your existing SQL statements work with a minor update, especially when using an augmented version of an open-source database such as a cloud provider that may not be as transparent about all changes.
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The curse of MySQL warnings
MySQL warnings are an anti-pattern when it comes to maintaining data integrity. When the information retrieved from a database does not match what was entered, and this is not identified immediately, this can be permanently lost.
Read more![Digital Tech Trek Digest [#Issue 2024.06]](https://ronaldbradford.com/images/blog/2024-digital-tech-trek-digest.png)
Digital Tech Trek Digest [#Issue 2024.06]
MySQL Belgian Days 2024 and FOSDEM 2024 In this past week, I’ve been able not just to read or watch digital content online but to meet people in person. In Brussels, first at the MySQL Belgian Days 2024 event, followed by FOSDEM 2024 .
Read moreWhat does the MySQL mysqlsh util.checkForServerUpgrade() execute
During a recent Aurora MySQL 8 upgrade process, a number of validation checks have failed. This is an analysis of the error message “present in INFORMATION_SCHEMA’s INNODB_SYS_TABLES table but missing from TABLES table”.
Read moreUpgrading to AWS Aurora MySQL 8
With Aurora MySQL 8 now generally available to all, you may want to consider the plan for an upgrade path if you would like to take advantage of the new features for your application, for example, Common Table Expressions (CTE).
Read moreTDD for Infrastructure
Test Driven Development (TDD) is an important principle for producing quality software. This is not a new concept. The Extreme Programming (XP) agile methodology (1999) outlined the concept before the acronym became more widely accepted as “Another requirement is testability.
Read moreDefensive Data Techniques
As a data architect I always ensure that for any database schema change there a fully recoverable execution path. I have generally advised to create a patch/revert process for every change.
Read moreIdentifying MySQL SSL communication using ngrep
Prior to MySQL 5.7 client communications with a MySQL instance were unencrypted by default. This plaintext capability allowed for various tools including pt-query-digest to analyze TCP/IP traffic. Starting with MySQL 5.
Read moreQ: Does MySQL support ACID? A: Yes
I was recently asked this question by an experienced academic at the NY Oracle Users Group event I presented at. Does MySQL support ACID? (ACID is a set of properties essential for a relational database to perform transactions , i.
Read moreExpired MySQL passwords
I was surprised to find on one of my websites the message “Connect failed: Your password has expired. To log in you must change it using a client that supports expired passwords.
Read morePercona Live Presentation: Improving Performance With Better Indexes
The slides for my Improving Performance With Better Indexes presentation at Percona Live 2015 MySQL Conference and Expo are now available. In this presentation I discuss how to identify, review and analyze SQL statements in order to create better indexes for your queries.
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