How do I prepare for a SQL technical interview?

Posted on by Emilia Duggan

How do I prepare for a SQL technical interview?

If you want to perform well at the SQL job interview, these are the concepts you need to know:

  1. Data Definition Language (DDL) keywords.
  2. Data Manipulation Language (DML) keywords.
  3. Data Control Language (DCL) keywords.
  4. Transaction Control Language (TCL) keywords.
  5. SQL constraints.
  6. JOINs.
  7. indexes.
  8. transactions.

Where can I practice SQL queries for interview?

I recommend the SQL Practice track at LearnSQL.com. It contains over 600 interactive SQL exercises to help you review and practice SQL before an interview. In this article, I’ll help you prepare for the by going over some common questions and SQL exercises that recruiters use during the interview process.

How do you talk about SQL in interview?

In your answer, you want to include why you’re interested in working in SQL, try to avoid generic answers, but include any particular reasons and aspects of SQL that really drive you.

How do you brush up SQL SKills?

Let’s explore some of them:

  1. Make SQL Part of Your Work Day.
  2. Document Your SQL Learning Experience.
  3. Produce Reports using SQL for your business.
  4. Share Your SQL Knowledge with Others.
  5. Volunteer or Freelance on an SQL or Database Project.
  6. Learn SQL Early in Your Career.
  7. Once You Know SQL, Look at Performance.

Where do I prepare SQL queries?

1. Practice SQL Queries

  1. Hop on over to the SQL Practice course on LearnSQL.com.
  2. Once you’ve got that under your belt, spend some time studying the type of SQL questions employers are likely to ask in your interview.
  3. Another great place to get some SQL practice is w3resource.com.

How good is interview query?

“Interview Query is very data science specific and does a really great job on touching on all aspects of what the modern data science role is like.” “Interview Query is great! The solutions are really well written and the concepts in the sql questions were surprisingly repeated a couple times in all of my interviews.”

How master SQL fast?

Here’s the best way to learn SQL:

  1. Step 1: Determine why you want to learn SQL.
  2. Step 2: Learn the basic syntax.
  3. Step 3: Start working on guided projects.
  4. Step 4: Familiarize yourself with helpful SQL resources.
  5. Step 5: Build your own SQL projects.
  6. Step 6: Make more advanced projects.

How do I refactor an existing SQL query?

END Another option is to do this automatically, using ApexSQL Refactor. ApexSQL Refactor is a SQL Server Management Studio and Visual Studio add-in which creates stored procedures and functions by refactoring the existing SQL queries, without a need to write any additional code or determine and declare parameters manually.

What is apexsql refactor?

ApexSQL Refactor is a SQL Server Management Studio and Visual Studio add-in which creates stored procedures and functions by refactoring the existing SQL queries, without a need to write any additional code or determine and declare parameters manually.

What is refactoring in programming?

Refactoring means taking code that although it probably works, is not correct in terms of structure or general tidiness. Refactoring involves changing the code so that it is better written or in a position to be made better later on.

Is there a good book on database refactoring?

There is a book on the subject: ” Refactoring Databases “. I haven’t read it, but it got 4.5/5 stars on Amazon and is co-authored by Scott Ambler, which are both good signs. Show activity on this post. Not that I’ve ever found. I’ve mostly done SQL Server work and the standard techniques are: