Skip to contentSkip to footer

Data Interview Questions

Salaries
Interviews

132,699 data interview questions shared by candidates

Python questions: 1. Replace None value with previous value present in a list. 2. Given a ´dictionary, print the key for nth highest value present in the dict. If there are more than 1 record present for nth highest value then sort the key and print the first one. 3. Given two sentences, you have to print the words those are not present in either of the sentences.(If one word is present twice in 1st sentence but not present in 2nd sentence then you have to print that word too) 4. Forgot another question you have to pass all the cases, specially on edge cases. SQL questions: 1. Mostly % calculation, also refer the questions available here in Glassdoor. Next will be my Onsite Interview of 3.30hr. If anyone can help me on that or else I will update later on that interview as well.
avatar

Data Engineer

Interviewed at Meta

3.6★
Mar 9, 2021

Python questions: 1. Replace None value with previous value present in a list. 2. Given a ´dictionary, print the key for nth highest value present in the dict. If there are more than 1 record present for nth highest value then sort the key and print the first one. 3. Given two sentences, you have to print the words those are not present in either of the sentences.(If one word is present twice in 1st sentence but not present in 2nd sentence then you have to print that word too) 4. Forgot another question you have to pass all the cases, specially on edge cases. SQL questions: 1. Mostly % calculation, also refer the questions available here in Glassdoor. Next will be my Onsite Interview of 3.30hr. If anyone can help me on that or else I will update later on that interview as well.

You have a 2-D array of friends like [[A,B],[A,C],[B,D],[B,C],[R,M], [S],[P], [A]] Write a function that creates a dictionary of how many friends each person has. People can have 0 to many friends. However, there won't be repeat relationships like [A,B] and [B,A] and neither will there be more than 2 people in a relationship
avatar

Data Engineer

Interviewed at Meta

3.6★
Oct 31, 2018

You have a 2-D array of friends like [[A,B],[A,C],[B,D],[B,C],[R,M], [S],[P], [A]] Write a function that creates a dictionary of how many friends each person has. People can have 0 to many friends. However, there won't be repeat relationships like [A,B] and [B,A] and neither will there be more than 2 people in a relationship

SQL questions - A table schema with tables like employee, department, employee_to_projects, projects 1) Select employee from departments where max salary of the department is 40k 2) Select employee assigned to projects 3) Select employee which have the max salary in a given department 4) Select employee with second highest salary 5) Table has two data entries every day for # of apples and oranges sold. write a query to get the difference between the apples and oranges sold on a given day
avatar

Data Engineer

Interviewed at Meta

3.6★
May 24, 2016

SQL questions - A table schema with tables like employee, department, employee_to_projects, projects 1) Select employee from departments where max salary of the department is 40k 2) Select employee assigned to projects 3) Select employee which have the max salary in a given department 4) Select employee with second highest salary 5) Table has two data entries every day for # of apples and oranges sold. write a query to get the difference between the apples and oranges sold on a given day

Viewing 21 - 30 interview questions

Glassdoor has 132,699 interview questions and reports from Data interviews. Prepare for your interview. Get hired. Love your job.