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SQL Interview Success: Unlocking the Top 5 Frequently Asked Queries

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 Here are the five top commonly asked SQL queries in the interviews. These you can expect in Data Analyst, or, Data Engineer interviews. Top SQL Queries for Interviews 01. Joins The commonly asked question pertains to providing two tables, determining the number of rows that will return on various join types, and the resultant. Table1 -------- id ---- 1 1 2 3 Table2 -------- id ---- 1 3 1 NULL Output ------- Inner join --------------- 5 rows will return The result will be: =============== 1  1 1   1 1   1 1    1 3    3 02. Substring and Concat Here, we need to write an SQL query to make the upper case of the first letter and the small case of the remaining letter. Table1 ------ ename ===== raJu venKat kRIshna Solution: ========== SELECT CONCAT(UPPER(SUBSTRING(name, 1, 1)), LOWER(SUBSTRING(name, 2))) AS capitalized_name FROM Table1; 03. Case statement SQL Query ========= SELECT Code1, Code2,      CASE         WHEN Code1 = 'A' AND Code2 = 'AA' THEN "A" | "A
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Udemy Best Selling Web Development Course

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You may ask which course you need to learn. That is a web development course. You can do both regular and part-time job. This course has such a beautifulness.
Udemy popular course
Another way is you can develop your own website and you can learn how to build your website. This is also one kind of advantage, so I am stressing to learn this course.

1. Web development

By the end of this course, you will have the confidence and ability to create beautiful, functional websites. This course is project based so you be jumping into building your first website in no time. Don't worry if you have little or no experience, I will take it easy and try to clearly explain what we are doing and learn as we build.

I believe this is the best way to learn, you will be able to apply what you are learning to a real project and instantly see the results.

What you will be building:
  • Project 1- Begin by creating static recipe website from scratch, learn the fundamentals of HTML & CSS by hand coding your first website.
  • Project 2- Building on the skills you have learned, we will now step it up by creating a fully responsive College website, again from scratch which looks great on any device. You will learn new techniques such as media queries and how to set different size images to different size devices to improve download times and image quality. 
  • Project 3- You should now have a good understanding of how websites are build after building 2 websites from scratch. We will now move on to use the popular Bootstrap framework, this will allow us to build great looking, responsive websites faster and easier. You will be introduced to many of Bootstraps great features as we build the third and final project, a hotel website.
This final website will be packed with great features such as drop-down navigation bars, glyphicons, a sliding carousel, and a mobile-first grid system. This course is ideal if you want to save money and build a website for personal use, for your business, or maybe you want to launch a new career.

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