Snowflake Inc. has acquired Datometry Inc., a startup that developed software for porting workloads between databases. The ...

【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） ...

We promise we won't give you a pop (corn) quiz at the end When I was a little girl, I used to play counting games while I ate corn on the cob. First, I would count the number of bites it took me to ...

Running the following model fails due to the generated SQL being incorrect. select id from {{ source('public_api_source', 'public_api_request_log_extended ...

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

To type numbers using the default keyboards on mobile devices, we usually have to hit ?123 (Android) or 123 (iPhone) to switch the layout. That’s a bit tedious, especially if you have to type numbers ...

When designing objects in SQL Server, we must follow certain best practices. For example, a table should have primary keys, identity columns, clustered and unclustered indexes, data integrity and ...

The theoretical limit of rows and columns in the Microsoft Office application Excel is well defined. If you exceed this mark, you are prompted with a ‘File not loaded completely’ popup message. It ...