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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
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5 Key Features of SAP HANA IoT

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SAP this week pulled the curtain back on a version of its HANA cloud platform tailored specifically to the Internet of Things applications.

The company said the private cloud service, based on its in-memory computing platform HANA, will provide the foundation for its IoT application services – analytics, telematics, its connected car services, and manufacturing offerings.


SAP hasn’t commented on whether it will open up the platform for non-SAP applications. But the company said the move means it now offers an end-to-end spectrum of IoT services.

SAP is helping customers re imagine their business with the most comprehensive portfolio of the Internet of Things solutions from core business operations to the edge of the network.

SAP HANA in IoT Key Features
  1. With the launch of SAP HANA Cloud Platform for the Internet of Things, our customers and partners now have the ability to connect anything to any app or business process in their company and business network.
  2. This will achieve operational excellence and deliver new customer experiences, products, and services,” Lucas said.
  3. As a sweetener the company will throw in free and unlimited access (for a limited time) to SAP SQL Anywhere, the SAP’s embeddable database for IoT devices, when customers sign up to use the HANA Cloud IoT service. Siemens and Tennant are already running production deployments on the platform.
  4. Paul Wellman, chief information officer at Tennant said, Using SAP HANA, Tennant is able to differentiate its solutions and remain competitive in the cleaning equipment business.
  5. Now our customers can measure usage across their fleet to drive operational consistency, track machines to better manage assets and leverage this business intelligence to achieve significant cost savings.
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