SQL interview questions and online tests

The right SQL interview questions and online tests to screen SQL developers

SQLオンラインテストの推奨役割

• データアナリスト
• データベース管理者
• SQL開発者
• データベースエンジニア
• データベーススペシャリスト
• ジュニアSQL開発者
• ミドルSQL開発者
• シニアSQL開発者
• データ入力技術者
• データ品質スペシャリスト

How our SQL interview questions tests work

実生活テスト^TM methodology powers DevSkiller SQL coding tests. Our selection of coding tests will help you analyze your applicants’ knowledge of various SQL versions. In addition to that, our coding tests will help you assess applicants’ coding skills, problem-solving ability, and time management.

主な特徴

• DevSkillerのSQLコーディングテストは、応募者のコーディング能力を測定します。
• 世界中の候補者を自由かつ便利にテストできるリモートテスト
• 実生活テスト^TM methodology creates a better user experience where candidates can use their own IDE, clone to GIT, run unit tests and access Stack Overlow/Github/Google for research
• 正確なテスト結果を保証する厳格な盗作防止ツール
• 技術専門家でなくても理解できる結果を自動生成
• ジュニア・レベル、ミドル・レベル、シニア・レベルにSQLコーディング・テストを用意

SQL開発者に求められるもの

SQLは最もポピュラーな4GL（第4世代プログラミング言語）であり、プログラマーはデータベースがどのように結果を計算するかではなく、結果がどのように見えるかを宣言するだけである。SQLは、中央データベースからデータにアクセスするために、Javaのような他の、より汎用的なプログラミング言語に組み込まれている。

資格のあるSQL開発者は、SQLパフォーマンスに精通している必要があります。これに加えて、成功する候補者は、リレーショナル理論の知識を実証したSQL設計スキルを持っている必要があります。最後に、SQLのリファクタリングのスキルは、SQLがより複雑になる大規模なチームでは非常に役立ちます。

Skills covered in our SQL interview questions and online tests

• HSQLDB
• モンゴ
• モンゴDB
• MSSQL
• MySQL
• ノーエスキューエル
• オラクル
• PostgreSQL
• SQL
• CSS
• ES6
• HTML
• ジャバスクリプト
• ピーディーオー

良さそうだが、もっと欲しい？

定義済みの環境でコーディングテストを実行したいですか？自分のコードベースを使って応募者をテストしたいですか？DevSkillerでは、オンラインタスクウィザードを使用してカスタムテストを構築することができます。当社の SQL コーディング・テストで、技術スクリーニングのニーズをすべて解決しましょう。

Want proof that our SQL interview questions and online tests work?

Some recruiters are sure as soon as they hear about our SQL online tests that DevSkiller testing is the tool they need for their business. Don’t worry if you’re still a little unsure though. Being sure how to invest your company’s money can be daunting. So instead of taking our word for it, read what our past customers have to say:

Patrycja Kiljańska – Talent acquisition specialist at Spartez

「DevSkillerを導入したことで、メンテナンス性の高い社内ソリューションを置き換えることができました。私たちのプロセスは同じように見えますが、製品はより良いパフォーマンスを提供してくれます。また、結果の評価もはるかに簡単です。"

Richard Williams – VP of engineering at Plutora

“Thanks to automating the screening stage, we were able to reduce the interview rate by 50%. At the same time, the quality of candidates who make it to the interview stage is now much greater. DevSkiller adds an extra layer of quality to our technical hiring process”

マグダレーナ・ロゴ - コディラ副マーケティング・マネージャー

"DevSkillerをテストの採点に使用することで、2倍のコスト効率になると同時に、生徒たちはより良いテストを受けることができ、将来の採用試験に備えることができます。"

よくある質問

RealLifeTestingとは^TM?

If you have never encountered RealLifeTesting^TM before, you might have a few questions.

At DevSkiller we believe the best way to assess a developer’s skills is to have them do actual development work. Much like how you would test a driver’s skills by asking them to drive. This might seem obvious, but until now developers were tested using academic algorithmic tests that don’t accurately measure their skills in the actual role. Our SQL online tests implement RealLifeTesting^TM to recreate a simulated version of a developer’s average workday and then set them challenges to face within that simulation. By doing this we are able to measure exactly how well each developer candidate performs in various areas, all while maintaining a controlled testing environment.

To perform well during an assessment, the best developers will be those who can effectively demonstrate their skills in coding and their use of resources like Stack Overflow to find solutions to the problems they encounter. The results will show that candidates who have the best coding skills, code cleanliness, and problem-solving skills, are those who gain the highest test score.

DevSkillerの設定にはどのくらい時間がかかりますか？

From the very beginning, DevSkiller SQL online tests are designed to be as quick as possible to send out, as well as to set-up. Our test library comes packed with default SQL online tests that can be ready to send out as soon as you have created your account. That means you can be testing candidates within a matter of minutes. The default tests have been deliberately set by our experts, loaded with the most popular test settings. If you decide you want to alter these settings, then you can. Our customized tests even allow you to change the duration of the tests, alter the difficulty level, and even affect the time given for each individual question.

盗作についてはどうしますか？

You needn’t worry about the possibility of a candidate gaining an unfair advantage while taking our SQL online tests. At DevSkiller we implement a number of anti-plagiarism tools to ensure you only receive accurate results.

Screen recording can be implemented to check whether the candidate is looking only at their own screen or at a different screen as well while taking a test. We can also use a range of social listening tools, check the candidate’s IP address, and use live pair notifications. All of the previous test answers entered into our system are logged and our plagiarism detector also checks these answers against any new answers provided to look for a match. That way if a candidate provides an answer that they stole from a previous test, our system will automatically flag this up. If a candidate’s entered code is repeated elsewhere, we will know about it.

DevSkillerを使うにはプログラマーである必要がありますか？

DevSkiller SQL online tests offer many great advantages to any recruiter, but one of the main ones has to be that recruiters, no matter how proficient they are at SQL development themselves, are able to accurately recruit even the most skilled professional. This is because our SQL tests are easy to send out and the results are simple to understand, it is only the tests themselves that can be challenging. Any expertise you have in the subject will certainly help, but effectively this means you don’t have to be an expert to hire one.