【面试题】 有一张“学生成绩表”，包含4个字段：班级id、学生id、课程id、成绩。 问题1： 求出每个学生成绩最高的三条记录 问题2： 找出每门课程都高于班级课程平均分的学生 【解题步骤】 1. topN问题 问题1是常见的排名问题（topN问题） ...

在数据量激增的背景下，MySQL查询性能已成为开发者最头疼的问题之一。本文将分享经验证的"3步索引优化法"，配合最新工具链，带你实现查询效率的十倍提升。 -- 2025年常见陷阱 SELECT * FROM orders WHERE JSON_EXTRACT (metadata, '$.region') = 'Asia'; -- JSON路径查询未建索引 ...

Mapping and geochemical sampling across the Teichman area in the Egina Gold Camp has defined multiple prospects over an area of 1.3 x 2.5 km, with strong potential along two main shear corridors. The ...

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These questions come from my Udemy training and the certificationexams.pro website, resources that have helped many students pass the DP-100 certification. These are not DP-100 exam dumps or ...

An online billing service named HarborCloud runs a browser callable REST API and the engineers must prevent web pages served from other domains from invoking those endpoints in a browser. Which ...

The Global Findex Database is the world's only demand-side survey on financial inclusion and a leading source of data on how adults around the world access and use financial services. Since its launch ...

HIGHLIGHTS Rock chip results from a recently completed reconnaissance program at the Tibooburra Gold Project defined new ...

Snowflake???s AI-fueled growth, expanding ecosystem and steady margins reinforce its premium valuation and strong long-term potential ...

The Olivier Award-winning caper musical, based on a World War II deception operation, makes its way across the pond. Get tickets to Operation Mincemeat: The Musical on Broadway!

Tony winner Daniel Radcliffe stars in the Broadway premiere of this exhilarating and heartwarming play about a man looking back on his life.