Intermediate SQL interview questions with detailed answers: 11. Find Customer Order Counts Question: Write a query to list customers who have placed more than 5 orders. Use the customers and orders tables. Answer: SELECT c.customer_id, c.customer_name, COUNT(o.order_id) AS order_count FROM ...
3. What is SQL? SQL stands for Structured Query Language , and it is used to communicate with the Database. This is a standard language used to perform tasks such as retrieval, updation, insertion and deletion of data from a database. 7. What is a unique key? A Unique key constraint ...
SQL (Structured Query Language) Interview Questions And AnswersSharpen your SQL interview expertise with our handpicked 172 questions. Each question is crafted to challenge your understanding and proficiency in SQL. Suitable for all skill levels, these questions are essential for effective preparation. ...
SQL Interview Question 面试的时候发现会问一些SQL的基本问题,在此总结一下。 ProgramInterview/SQL这个网站上的问题还比较全。 1. Join type INNER JOIN: Returns all rows when there is at least one match in BOTH tables LEFT JOIN: Return all rows from the left table, and the matched rows from the...
This guide listed out a few of the most asked SQL interview questions and gave their answers to begin with, to keep the post in limit. You are advised to read a more detailed answer if a question is not very clear to you.You can also go over JDBC performance tips for additional ...
SQL在2021年的数据方向面试中目前大部分只存在于phone interview（电话面试）当中，在onsite interview（...
在2024 年的面试中,SQL 主要集中在电话面试阶段(phone interview),而在现场面试(onsite interview)中,SQL 的考察大幅减少,取而代之的是Python。这显示出大厂越来越注重候选人实际的数据处理能力,而不是简单的数据提取能力。这些公司不仅仅包括谷歌和 Meta,还包括像 Roblox、DoorDash 这样的新兴独角兽。 因此,掌握了...
EXISTS Returns TRUE if query matches at least one row in set 10. What have you used SQL for in past jobs? This one is a softer question, but no less important than the others listed on this page! If you're walking into an SQL interview, you're bound to be asked about your prior...
In my previous articles I have explained theSQL interview questions ,BI Interview questionswhich will give the best idea about the question that may ask in interview. In this article i will try to explain most important PL/SQL Interview Questions that may ask in interview.PL/SQL is the Proced...
This repo is a collection of all the Interview Query's SQL interview question. - GitHub - nehanawar025/interview_query_SQL: This repo is a collection of all the Interview Query's SQL interview question.