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I applied via Job Portal
Identify the top 3 students based on their grades in a class.
Calculate the average grade for each student
Sort the students based on their average grades in descending order
Select the top 3 students
Guesstimate questions
10 sql and 10 python questions
What people are saying about Target
Union combines and removes duplicates, while Union All combines without removing duplicates.
Union combines two result sets and removes duplicates
Union All combines two result sets without removing duplicates
Union is slower than Union All as it involves removing duplicates
Union requires both result sets to have the same number of columns and compatible data types
Target interview questions for designations
I applied via Naukri.com and was interviewed in Sep 2023. There were 3 interview rounds.
Road daily revenue collection
I applied via LinkedIn and was interviewed in Mar 2024. There were 2 interview rounds.
It was Python based basic questions only
I applied via Company Website and was interviewed before Oct 2023. There were 2 interview rounds.
Business Thinking Case studies
I have 3 years of experience in data analysis.
Utilized various statistical tools and software for data analysis
Performed data cleaning, transformation, and visualization
Developed predictive models and conducted trend analysis
Worked on projects involving large datasets from diverse sources
I am currently working as a Data Analyst at a tech company.
Analyzing large datasets to extract valuable insights
Creating visualizations and reports to communicate findings
Collaborating with cross-functional teams to drive data-driven decision making
I applied via Naukri.com and was interviewed in Jun 2024. There was 1 interview round.
Running totals in a year using DAX
Use the DAX function CALCULATE to create running totals
Use the FILTER function to specify the date range for the running total
Example: CALCULATE(SUM(Sales[Amount]), FILTER(ALL('Date'[Date]), 'Date'[Date] <= MAX('Date'[Date])))
I applied via Naukri.com and was interviewed in Jul 2022. There were 3 interview rounds.
Vlookup limitations include limited search range, case sensitivity, and inability to handle multiple matches.
Vlookup only searches for values in the leftmost column of the table array
It is case sensitive and cannot handle spelling errors
It only returns the first match and cannot handle multiple matches
It cannot search for values to the left of the lookup column
It can be slow and inefficient for large datasets
Vlookup and Index-Match are both Excel functions used for lookup and retrieval of data.
Vlookup is simpler and faster but has limitations in terms of flexibility and handling of large datasets.
Index-Match is more versatile and can handle complex data structures but is slower and requires more effort to set up.
Vlookup is best suited for simple lookups with small datasets while Index-Match is better for more complex looku...
Excel functions are pre-built formulas that perform calculations or manipulate data in a spreadsheet.
Sum: adds up a range of numbers
Sum if: adds up a range of numbers based on a specified condition
Count: counts the number of cells in a range that contain numbers
CountA: counts the number of cells in a range that are not empty
Count Blanks: counts the number of empty cells in a range
SQL limitations include lack of scalability, security vulnerabilities, and difficulty in handling unstructured data.
SQL is not suitable for handling unstructured data like images, videos, and audio files.
It can be difficult to scale SQL databases to handle large amounts of data.
SQL databases can be vulnerable to security threats like SQL injection attacks.
SQL is not always the best choice for real-time data processing ...
Code to find duplicate records
Identify the key columns to check for duplicates
Use GROUP BY and HAVING clauses to filter out duplicates
Consider using window functions like ROW_NUMBER() to identify and remove duplicates
Use programming languages like SQL, Python, or R to write the code
Code to describe database and columns from a table
Use SQL SELECT statement to retrieve column names and data types
Use DESC command to get table structure
Use INFORMATION_SCHEMA.COLUMNS to get detailed information about columns
Use SHOW CREATE TABLE to get table creation statement
A trigger in SQL is a set of instructions that automatically executes in response to a specific event or action.
Triggers can be used to enforce business rules, audit changes, or replicate data.
They can be defined to execute before or after an INSERT, UPDATE, or DELETE statement.
Triggers can also be nested, meaning one trigger can execute another trigger.
Examples of triggers include sending an email notification when a ...
Stored procedures are precompiled SQL statements that can be reused and executed multiple times.
Stored procedures improve performance by reducing network traffic and improving security.
They can be used to encapsulate business logic and provide a consistent interface to the database.
Stored procedures can also be used to simplify complex queries and transactions.
Examples include procedures for inserting, updating, and de...
Data is collected from various sources including databases, APIs, and user input.
We have access to multiple databases where we can extract relevant data
We use APIs to gather data from external sources such as social media platforms
Users can input data through forms or surveys
We also collect data through web scraping techniques
As a data analyst, I face challenges such as data quality issues, incomplete or inconsistent data, and time constraints.
Data quality issues: Dealing with missing or inaccurate data that can affect the analysis.
Incomplete or inconsistent data: Working with datasets that are not complete or have inconsistencies, requiring data cleaning and manipulation.
Time constraints: Balancing multiple projects and deadlines, often ne...
The sequence of execution of SQL codes is Select-From-Where-Group By-Having-Order By.
Select: choose the columns to display
From: specify the table(s) to retrieve data from
Where: filter the data based on conditions
Group By: group the data based on a column
Having: filter the grouped data based on conditions
Order By: sort the data based on a column
HAVING is used with GROUP BY to filter the results after grouping. WHERE is used to filter the results before grouping.
HAVING is used with GROUP BY clause while WHERE is used with SELECT clause.
HAVING is used to filter the results of aggregate functions while WHERE is used to filter individual rows.
HAVING is used to filter the results after grouping while WHERE is used to filter the results before grouping.
HAVING can o...
CSV files are plain text files that store tabular data, while Excel files are binary files that can contain multiple sheets and complex formatting.
CSV files are simpler and more lightweight compared to Excel files.
CSV files can be easily opened and edited using a text editor, while Excel files require specific software like Microsoft Excel.
CSV files do not support formulas, macros, or formatting options like colors and...
I have handled large amounts of data in my previous roles.
I have experience handling terabytes of data in my previous role as a data analyst at XYZ company.
I have worked with data from various sources such as databases, spreadsheets, and APIs.
I have also used tools like SQL, Python, and Excel to manipulate and analyze data.
I am comfortable working with both structured and unstructured data.
I have experience cleaning an...
Different approaches for data cleaning include removing duplicates, handling missing values, correcting inconsistent data, and standardizing formats.
Remove duplicates
Handle missing values
Correct inconsistent data
Standardize formats
Use statistical methods to identify outliers
Check for data accuracy and completeness
Normalize data
Transform data types
Apply data validation rules
based on 9 interviews
1 Interview rounds
based on 12 reviews
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