After a record-setting 2025, both gold and silver prices have hit new highs of over $5,100 and $100, respectively. Gold, silver and other precious metals saw this growth in part due to geopolitical ...

Getting ready for a SQL interview can feel like a big task. There are so many things to know, and interviewers love to ask about them! This guide is here to help. We’ve gathered some of the most ...

1️) Scalar Subquery in SELECT: SELECT e.emp_id, e.emp_name, e.salary, (SELECT ROUND(AVG(salary), 2) FROM employees WHERE dept_id = e.dept_id) AS dept_avg_salary FROM employees e; 2️) Correlated ...

When doing a subquery with unions, the cache is incorrectly applied if the second query in the union is cached, but the first one isn't. defmodule Schema1 do use Ecto.Schema schema "external_payments" ...