DataMetica Data Analyst Interview Questions and Answers

Done in notepad. Data analysis fundamental and coding fundamentals were covered.

Q1. Piviot tables, vlookups excel case study.
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Q2. Window fucntions SQL question and pandas data manupilation.
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Q1. Can you tell me about yourself?
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Reasoning, logical , English

Q1. What are the functions in Mysql
Ans. 
MySQL functions are built-in functions that can be used to perform various operations on data stored in a MySQL database.
• MySQL functions can be used for mathematical calculations, string manipulation, date and time operations, and more.

• Examples of MySQL functions include CONCAT() for concatenating strings, AVG() for calculating the average value of a column, and NOW() for retrieving the current date and time.

• MySQL func...read more
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Q1. What about you?
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Multiple sections on cognitive ability, quant and logical reasoning.
1 coding question

Easy
50% went to next round

Q1. Technical: SQL, DBMS, Basic programming questions- palindrome, fibonacci, discussion on projects and internships
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Q2. Difference between UNION and UNION ALL
Ans. 
UNION combines and removes duplicates, UNION ALL combines without removing duplicates.
• UNION merges the results of two or more SELECT statements and removes duplicates.

• UNION ALL merges the results of two or more SELECT statements without removing duplicates.

• UNION is slower as it has to remove duplicates, while UNION ALL is faster.

• Example: SELECT column1 FROM table1 UNION SELECT column1 FROM table2;

• Example: SELECT column...read more
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Q3. Types of SQL commands
Ans. 
SQL commands include SELECT, INSERT, UPDATE, DELETE, CREATE, and DROP.
• SELECT: retrieves data from a database

• INSERT: adds new records to a table

• UPDATE: modifies existing records in a table

• DELETE: removes records from a table

• CREATE: creates a new table, view, or index

• DROP: deletes a table or index
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Q1. Common HR questions
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2 coding questions in 45 min

Q1. Basics of java and frameworks
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Q2. Basics of SQL and types of queries
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30 min of logical reasoning and basic aptitude

30 min of GD over a general topic to check your communication skills

Q1. Why do you want to join our company
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Q2. Why should we hire you
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Questions were tough- DP Array

Different GPOs policy were discussed

Q1. Questions were regarding Behavior
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Basic coding questions.

Q1. General stuff like do you know about the company
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Q2. Future goals, where do you see yourself in 5 years.
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