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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

Social Media Jobs You need to look in

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Social media has transformed the way people socialize, network and stay in touch. Social Media Jobs Social media is more than liking or retweeting a post; it's a new, cutting-edge marketing medium with unlimited potential. According to Constant Contact's Small Businesses: Then and Now Survey conducted in May 2013, social media marketing has exploded, with 87 percent of small businesses using social media as a marketing tool today. Since social media marketing requires a combination of analytical skills, good communication and performing extensive research, you can bet business, communications and English-related degrees are good candidates for 2014 social media job openings. Explore the new frontier of marketing with these six up-and-coming social media positions: Search engine optimization (SEO) specialist Social media strategist Online community manager Social media marketing manager Social media marketing coordinator Blogger or social media copywriter