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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

Top Paid Software Jobs

There are eight Software jobs. Those are hot in demand at the same time they pay more package for you. it’s normal for your job hunt to take a few months these days. -From What color is your parachute 1. Business Intelligence Architect The primary responsibility of the business intelligence architect is data standards and procedures; warehousing; design and development of logical and physical data models and databases; distributed data management; information management functions. The business intelligence architect designs, develops and enforces standards and architecture for installing, configuring and using business intelligence applications for the purpose of directing and managing the organization. The role usually requires a bachelor's degree and at least some experience in a BI role. Salary:$81,200 2. ASIC Design Engineer The role produces application-specific integrated circuit (ASIC) designs and modifications by identifying design objectives and issues; rese