Member-only story
10 SQL ConceptsYou Must Know to Ace any SQL Interviews
Top SQL Interview Questions You Should Know in 2021
It’s almost the end of the year! I hope you all are studying hard and doing well. The beginning of the year (January and February) is usually the best time of the year to look for a job. So we need to be better prepared now and hit the ground running in 2021!
Tech companies usually have a large amount of data stored in their relational databases, so they want to see whether the candidates can extract and manipulate data using complex SQL queries before jumping into any modeling. SQL questions can be very tricky, so don’t underestimate SQL. Besides, no matter how good you are with SQL, you might still find it challenging to write the queries fast enough, especially under pressure. We all know how intimidating interviews can be, it’s ok if you didn’t fail the last interview. You can’t change what’s done, but you can learn from your mistakes and avoid making the same mistakes in the future.
Like all programming problems you’ll find in interviews, if you can’t spot the tricks, even easy problems on Leetcode can be very challenging. If you are new to SQL, you probably hope someone could share all the tricks with you. In this article, I will share all the common patterns I’ve seen from practicing SQL problems on Leetcode…
