Queen MQ is a partitioned message queue backed by PostgreSQL, built with uWebSockets, libuv, and the libpq async API. It gives you unlimited FIFO partitions that process independently, consumer groups ...

Each has its strengths, but their performance profiles vary dramatically depending on dataset size, indexing, and query structure. For this example, I used a table that a table that had 1 Mn+ records ...

A partitioned table is a table in which the data is split into multiple partitions based on a specific column, usually a date, numeric, or ID column. Each partition contains a subset of the data and ...

MySQL and PostgreSQL are two of the most used open source SQL databases, and both fulfill the role of a general-purpose database well. How do you choose which one to use for a project? Let's look at ...

本套路应用于子查询中含有row_number over(partition by order by) rn，并仅把rn列用于分类排序后筛选最大值的场景。 GaussDB中SQL语句的 ...

Part of the SQL Server 2022 blog series. Time series data is a set of values organized in the order in which they occur and arrive for processing. Unlike transactional data in SQL Server, which is not ...

This project provides extensions to the Apache Spark project in Scala and Python: Diff: A diff transformation and application for Datasets that computes the differences between two datasets, i.e.

This post was authored by Jos de Bruijn, Senior Program Manager, SQL Server. A release the magnitude of SQL Server 2016 deserves a new sample. AdventureWorks, which has been around since the SQL ...