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This edition of SQL Practice Problems assumes that you have some basic background knowledge about relational databases and tables. However, I’ve added some beginner level questions to gradually introduce the various parts of the SQL Select statement for those with less experience in SQL.
22 paź 2024 · This SQL quiz covers various topics like SQL basics, CRUD operations, operators, aggregation functions, constraints, joins, indexes, transactions, and query-based scenarios. We've included multiple-choice questions, fill-in-the-blank questions, and interactive coding challenges to keep things interesting and challenging.
17 wrz 2024 · This article offers 12 SQL function practice exercises. Learn about string, numeric, and NULL functions! Each exercise is accompanied by a solution query and detailed explanation.
18 sty 2024 · Practice basic SQL – writing SELECT queries, joining multiple tables, using aggregate functions, and working with GROUP BY – for free with these 18 beginner-friendly exercises. Solutions and explanations included!
29 sie 2024 · Practice with 50 basic to advanced SQL queries commonly asked in interview questions, run them live, find answers, and secure your dream job.
Find the names of all employees in the database who live in the same cities as the companies for which they work. select e.employee-name from employee e, works w, company c where e.employee-name = w.employee-name and e.city = c.city and w.company-name = c.company-name.
The document provides a set of practice SQL exercises using the Sakila and World databases. It includes questions to display tables, table structures, actor data, joins, and to query cities by population and name.
