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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

Career Vs Your Attitude Do These Now

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75% of the American workforce are actively looking for jobs at any given point in time, of which 69% of them are currently employed.  1. Networking  Tapping into your Network, Creating, and Maximizing your Personal Brand and Researching Companies in your Field of Interest will help you in finding jobs that suit your interest.  Trying to randomly find a job will get you nowhere. PREPARE, PLAN, and RESEARCH , and you will find a job that is meant for you.  If you have attended a get-together of friends or a social gathering off-late, chances are that you would have come across at least half a dozen people, talking about their jobs; how they are unhappy with it and looking for a change, or how difficult it seems to get one in the first place. Job Search. Searching for a job has become one of the most time-occupying tasks in recent times. Almost as difficult as getting one, a job search means researching, identifying, and applying for jobs and going through the functions of interviews, di