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I applied via Instahyre and was interviewed in May 2024. There were 2 interview rounds.
Asked to write different SQL queries.
1. Moving average of lf previous 10 days
2. For a data which records in and out time of an employee. How many employees were present in the office at a given time
3. A/B testing vs pre-post testing
1. Had to come up with a method to give a score to each user based on FRM(frequency, recency, monetory)
2. Guesstimate: how many burgers does McD sells in a day
I applied via Referral and was interviewed before Aug 2022. There were 2 interview rounds.
Setting up a Dark Store involves converting a retail store into a fulfillment center for online orders.
Select a suitable location for the Dark Store, preferably in a centralized area with good access to transportation.
Optimize the layout of the store for efficient picking, packing, and shipping of orders.
Implement inventory management systems to track stock levels accurately and prevent stockouts.
Train staff on order f...
Joins combine data from two or more tables based on a related column.
Joins are used to retrieve data from multiple tables based on a related column
Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id
The order of execution in a query determines the sequence in which operations are performed.
1. The order of execution in a query typically follows the sequence: FROM, WHERE, GROUP BY, HAVING, SELECT, ORDER BY.
2. The FROM clause specifies the tables involved in the query.
3. The WHERE clause filters the rows based on specified conditions.
4. The GROUP BY clause groups the rows that have the same values into summary rows.
5...
Group By is used to aggregate data based on a specific column, while Distinct is used to remove duplicate rows from a result set.
Group By is used with aggregate functions like COUNT, SUM, AVG, etc.
Distinct is used to retrieve unique values from a column or set of columns.
Group By can be used to group data based on multiple columns, while Distinct operates on individual columns only.
I applied via Walk-in and was interviewed before May 2020. There were 3 interview rounds.
I applied via Walk-in and was interviewed in Sep 2020. There was 1 interview round.
I applied via Naukri.com and was interviewed before Jan 2021. There were 3 interview rounds.
I applied via Company Website and was interviewed in May 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in Dec 2020. There were 4 interview rounds.
I applied via Referral
Data development and external hard work coding test Hr
I was interviewed before Nov 2019.
I applied via Company Website and was interviewed in Oct 2020. There was 1 interview round.
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