-- Each row of this table indicates the price of the product_id in the period from start_date to end_date. -- For each product_id there will be no two overlapping periods. That means there will be no ...

MariaDB 虽源自 MySQL 分叉（诞生于Oracle 收购 MySQL 之后），但历经一段时间发展，如今在开源数据库领域已获得引领性地位。在近几次主要版本更新中，这款数据库不仅增添了很多独特功能，提升了与 MySQL 的兼容性，还通过一系列重磅举措吸引 Oracle SQL 用户迁移至 MariaDB 。

今天上线的 V3.9 是 V3 系列进入维护期后的首次更新，共带来 16 项新增优化和 45 项问题修复，包括表设计器增强，SQL 编写和查询执行优化，数据导出 SQL 格式设置，数据迁移任务维护等功能。快来看看有哪些变化吧～ 👉 体验 SQLark V3.9 版本最新功能，欢迎在官网 ...

-- Write a SQL query for a report that provides the pairs (actor_id, director_id) where the actor have cooperated with the director at least 3 times.

CData Software Inc. is expanding its Connect AI platform with new tooling and governance features designed to help ...

Mar. 16, 2026 Scientists have developed a powerful new computational method that could accelerate the search for next-generation materials capable of turning sunlight into useful chemical energy. The ...