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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

Automation Career Top Skills You need

robotic software

Robotic process automation is an upcoming IT skill. Three tools are popular. It is difficult to learn all three tools. So, learn anyone's tool to start your career in automation.


To get a job in this line, I found in my research that some programming skills and Hand-on training on any one of the tools are required. Also, try to know the differences between popular RPA tools.

Skills Companies Looking in Automation Engineers


All big companies looking for candidates having experience in Automation Anywhere, Blue Prism, and UIPath. It is not possible to learn all tools. Learn anyone's tool and do practice well.


Ok.


You may ask a question about how to do it. Join in a good training institute and learn one tool.  Take online classes to learn faster.


To learn Uipath try here. Also, you can enroll in online courses to learn UiPath.

UiPath GO


The list of IT skills you need

  • Automation anywhere/Blue Prism/Uipath 
  • .Net/C#/Java/SQL skills 
  • MS-Visio 
  • Power Builder 
  • Python scripts/Unix Scripts/Perl Scripts 
  • HTML/CSS/JavaScript

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