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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

5 Top SEO Optimization Books to Read Today

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👉   Maximize Your Social: A One-Stop Guide to Building a Social Media Strategy for Marketing and Business Success Have you been staring at a blank slate without any inspiration for your social media marketing? Do you struggle to find the time and keep up with a consistent social media schedule? If you’ve answered yes to any of these questions, then you’ve come to the right place. This actionable book will help you get organized as you build a regular schedule of relevant, engaging content that will build your social media following. Maybe you're a marketer, a social media manager, or a blogger who wants to cut out the noise by reading one book that will show you how to make the most of your time. You no longer have to wonder where your time is going! As the content marketers at CoSchedule, we’ve personally used every piece of advice in this book. It’s helped us get around 60K followers across our social platforms—and you can experience the same success.  👉   How To Get To The T