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Cumulative sum in SQL is a running total of a column's values.
Use the SUM() function with the OVER() clause to calculate the cumulative sum.
The OVER() clause specifies the partitioning and ordering of rows for the calculation.
Example: SELECT column_name, SUM(column_name) OVER (ORDER BY column_name) AS cumulative_sum FROM table_name;
I applied via Naukri.com and was interviewed in Dec 2022. There were 3 interview rounds.
30 mins basic aptitude questions
I will use ETL (Extract, Transform, Load) process to analyze a large data set by extracting data from various sources, transforming it into a usable format, and loading it into a target database.
Extract data from multiple sources such as databases, files, APIs, etc.
Transform the data by cleaning, filtering, aggregating, and structuring it for analysis.
Load the transformed data into a target database for further analysi...
I am highly proficient in Excel, with advanced skills in data analysis, formulas, and pivot tables.
Advanced knowledge of Excel functions and formulas
Experience with creating complex spreadsheets for data analysis
Proficient in using pivot tables for summarizing and analyzing data
Skilled in data visualization using charts and graphs
Familiarity with macros and VBA for automation tasks
I applied via Campus Placement and was interviewed before Aug 2021. There were 4 interview rounds.
Be assertive. You can speak less, but be confident in your opinion. Try to have a different opinion from the rest of the crowd, this always works and gets you noticed.
Pharmaace Analytics interview questions for popular designations
Top trending discussions
I applied via Naukri.com and was interviewed before Apr 2021. There were 2 interview rounds.
Annotations are used in Springboot to simplify configuration and reduce boilerplate code.
Annotations are used to define the behavior of Spring components
They can be used to define the scope of a bean, inject dependencies, and handle exceptions
Some commonly used annotations include @Component, @Autowired, and @ExceptionHandler
Java 8 introduced several new features including lambda expressions, streams, and default methods.
Lambda expressions allow for functional programming and simplify code.
Streams provide a way to process collections of data in a functional style.
Default methods allow for adding new methods to interfaces without breaking existing implementations.
Other features include the Optional class, Date and Time API, and Nashorn Java
I applied via Naukri.com and was interviewed before Feb 2021. There were 2 interview rounds.
I applied via Campus Placement and was interviewed before Feb 2021. There were 2 interview rounds.
Focus on industry-specific nuances
I applied via Naukri.com and was interviewed in Jun 2019. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before May 2021. There were 2 interview rounds.
Coding questions will be given
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