Large tables can pose challenges for many operations when working with a database. Occasionally, we may need to modify the table definition. Since RDS replication does not use asynchronous for its replication, the typical switchover procedure is not feasible. However, the Blue/Green feature of RDS utilizes asynchronous replication, which allows us to update the table […]

In this blog post, we will explore how to use MySQL's spatial features to analyze the similarity of trajectories. We will focus on key metrics such as Frechet distance, which measures the similarity between two trajectories, and other geometric operations that help quantify how closely different paths align.

This functionality is available in MySQL Community and Enterprise Editions and HeatWave MySQL.

Transforming GPS coordinates into trajectories in MySQL involves organizing raw GPS points (as POINT geometries) into ordered paths and converting them into LINESTRING geometries. This process uses MySQL's spatial functions like ST_Collect to aggregate points and requires ensuring proper ordering (e.g., by timestamp or sequence) to construct accurate routes.

This blog post explores how to transform spatial data between different Spatial Reference Systems (SRS) in MySQL using the ST_Transform function. It covers the syntax and usage of ST_Transform, and its practical applications in mapping and spatial analysis by using demonstrative examples. Whether you're visualizing geographic data or integrating datasets from various sources, understanding SRS transformation is key to accurate spatial analysis.

MySQL 9.2.0 has introduced a new dynamic privilege: CREATE_SPATIAL_REFERENCE_SYSTEM. This privilege enables users to create, replace, and drop custom spatial reference systems (SRS), allowing for greater spatial data customization across MySQL environments without needing SUPER access. In this post, we’ll explain the use of this privilege and provide an example to demonstrate its application. The new privilege is available in MySQL Community and Enterprise Editions and HeatWave MySQL.

The MySQL Connection-Control Component allows database administrators to enforce limits on client connections based on frequency and behavior. It is especially useful in preventing denial-of-service (DoS) attacks, mitigating resource exhaustion, and regulating access during high-load scenarios.

What index will be used when you count all rows in a table? Well, the MySQL documentation provides a straightforward answer to this, quoting: InnoDB processes SELECT COUNT(*) statements by traversing the smallest available secondary index unless an index or optimizer hint directs the optimizer to use a different index. If a secondary index is […]

MySQL January 2025 GA Releases Now Available