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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

My 4 Top Books Success, Life, Money, Mind Power

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Four ultimate books I have collected after asking many seniors and experienced people. Based on their valuable suggestions I have added these books to my reading table. Simply nice collection. Even now I read these books regularly. Get these and you too can benefit. A book that has valuable information can be read by readers on a daily basis. As said, sometimes difficult to get all the information at one time. So many professionals read daily. Just grab the below collection to your next goal. Photo credit: Srini 👍 1. Greatness Guide 2 - Robin Sharma The Greatness Guide is a strikingly powerful and enormously practical handbook that will inspire you to get to world-class in both your personal and professional life. Written by Robin Sharma, one of the planet's top success coaches and a man whose ideas have been embraced by celebrity CEOs, leading entrepreneurs, rock stars and royalty, as well as by many Fortune 500 companies, the Greatness Guide contains a proven formula