HCL Group Interview Questions, Process, and Tips

Q1. In alphanumeric string get only numeric values
Ans. 
Use regular expressions to extract numeric values from an alphanumeric string.
• Use regular expression pattern '\d+' to match one or more numeric digits in the string.

• Apply the regular expression pattern to the alphanumeric string to extract only the numeric values.

• For example, if the input string is 'abc123def456', the output should be ['123', '456'].
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Q2. Get the 3rd highest value from a table
Ans. 
Use a subquery to get the 3rd highest value from a table
• Use a subquery to select distinct values from the table

• Order the distinct values in descending order

• Use LIMIT and OFFSET to get the 3rd highest value
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I am kusum from hansi in haryana

Q1. Any questions in interview
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Q2. Group discussion
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Q3. What is input and output in c++
Ans. 
Input and output in C++ refers to the process of taking data into a program and displaying results from the program.
• Input in C++ is the process of taking data from an external source, such as user input or a file.

• Output in C++ is the process of displaying results from the program to an external destination, such as the console or a file.

• Examples of input in C++ include using cin to read user input, or ifstream to read ...read more
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Q1. Accountant tally ERP 9
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Q2. TDS income tax return and GST
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Q3. Book keeping journal entry
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Q4. Accountant tally and TDS return
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Q5. Accountant tally ERP9 and GST
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Q1. WHAT IS POWER BI
Ans. 
Power BI is a business analytics tool by Microsoft that provides interactive visualizations and business intelligence capabilities.
• Power BI is used to connect to data sources, visualize and analyze data, and share insights across an organization.

• It allows users to create interactive reports and dashboards to gain insights from data.

• Power BI integrates with various data sources such as Excel, SQL Server, and cloud servi...read more
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Q2. TELL ME ABOUT YOURSELF
Ans. 
I am a dedicated Power BI Developer with a strong background in data analysis and visualization.
• Experienced in creating interactive reports and dashboards using Power BI

• Proficient in data modeling, DAX calculations, and ETL processes

• Skilled in optimizing data queries for performance efficiency

• Strong problem-solving skills and attention to detail

• Excellent communication and teamwork abilities
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Q1. Dispensing optics
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Q2. Binocular vision
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Q1. Data stage scenario
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Q2. Difference between Data Stage and informatica
Ans. 
Data Stage is an ETL tool by IBM, while Informatica is a popular ETL tool by Informatica Corporation.
• Data Stage is developed by IBM, while Informatica is developed by Informatica Corporation.

• Data Stage is known for its parallel processing capabilities, while Informatica is known for its ease of use and flexibility.

• Data Stage has a graphical interface for designing jobs, while Informatica uses a more traditional workflo...read more
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