记录一下此前未用过的CUBE和ROLLUP功能，便于日后查阅使用。 1、 Rollup 的处理机制是在完成基础数据汇总后，按从右至左的顺序，依次移除字段列表末尾的一个字段，对剩余字段进行分组聚合，并将生成的小计结果写入结果表，被移除字段的位置以 null 值填充。

The Rubik's Connected X Smart Cube is a tech-enhanced puzzle that teaches users how to solve it in under an hour. A Labor Day deal offers a 75% discount on a two-pack of the Smart Cube, bringing the ...

The first release candidate (RC0) of SQL Server 2025 is now available. As we move toward general availability, our focus shifts to delivering enhanced stability, performance, and product improvements ...

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Discover the magic of paper engineering! In this easy modular origami tutorial, you’ll learn how to fold a stunning ringed cube using simple sheets of paper. No glue, no scissors — just beautiful ...

Having children means being a puzzle-solver in ways big and small. By Samantha Mann Puzzling, to me, has always been an activity for people who lack legitimate hobbies. The thought of assembling 500 ...

Hello there! 👋 I'm Luca, a BI Developer with a passion for all things data, Proficient in Python, SQL and Power BI ...

Learn how to fold a stunning ringed cube using modular origami techniques in this beginner-friendly tutorial! With just a few sheets of paper and some simple folds, you'll create a 3D geometric ...

This tutorial will guide you through the process of using SQL databases with Python, focusing on MySQL as the database management system. You will learn how to set up your environment, connect to a ...