As Cook prepares to step aside as CEO later this year, it’s a time to review how he and Nadella stack up in their respective careers. Tim Cook’s impending retirement as Apple’s CEO marks the end of an ...

Database research and development often require a large number of SQL queries for benchmarking purposes. However, acquiring real-world SQL queries is challenging due to privacy concerns, and existing ...

To use an ibis table in sql_to_ibis you must register it. Note that for joins or queries that involve more than one table you must use the same ibis client when creating both ibis tables. Once the ...

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 ...

Calculating percentages is a common task when dealing with data analysis. In SQL, the process of calculating percentage may differ based on the database management system being used. In this article, ...

本篇主要介绍 MySQL 的函数索引（也叫表达式索引）。 通常来讲，索引都是基于字段本身或者字段前缀（第 20 篇），而函数索引是基于字段本身加上函数、操作符、表达式等计算而来。如果将表达式或者操作符也看做函数的话，简单来说，这样的索引就可以统称 ...

Many news sites and blogs are reporting that the data stolen last month from 37 million users of AshleyMadison.com — a site that facilitates cheating and extramarital affairs — has finally been posted ...