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Joins are used in databases to combine rows from two or more tables based on a related column between them.
Joins are used to retrieve data from multiple tables based on a related column between them
Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
Processing speed of scripting languages varies based on factors like code complexity and optimization.
Processing speed can vary based on the specific task being performed.
Compiled languages like C++ tend to be faster than interpreted languages like Python.
Optimizing code can improve processing speed.
JavaScript can be faster than Python for certain tasks.
Consider using libraries or frameworks optimized for performance.
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I applied via Referral and was interviewed in Jul 2024. There was 1 interview round.
Possible reasons for drop in CPM include seasonality, changes in ad inventory, shifts in audience demographics, and increased competition.
Seasonal fluctuations in advertising demand
Changes in available ad inventory
Shifts in audience demographics affecting targeting effectiveness
Increased competition leading to lower bids
Types of floors in GAM include carpet, hardwood, tile, and laminate.
Carpet
Hardwood
Tile
Laminate
I applied via Referral and was interviewed in Jul 2024. There was 1 interview round.
Possible reasons for drop in CPM include seasonality, changes in ad inventory, shifts in audience demographics, and increased competition.
Seasonal fluctuations in advertising demand
Changes in available ad inventory
Shifts in audience demographics affecting targeting effectiveness
Increased competition leading to lower bids
Types of floors in GAM include carpet, hardwood, tile, and laminate.
Carpet
Hardwood
Tile
Laminate
I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.
Excel file was give, used sumifs, countifs , index match formulas
I applied via LinkedIn and was interviewed before Aug 2023. There were 2 interview rounds.
Union combines and removes duplicates, Union All combines without removing duplicates.
Union combines result sets and removes duplicates
Union All combines result sets without removing duplicates
Union is slower than Union All as it involves removing duplicates
Example: SELECT column1 FROM table1 UNION SELECT column1 FROM table2;
Example: SELECT column1 FROM table1 UNION ALL SELECT column1 FROM table2;
To show top 5 in pandas, use the nlargest() function.
Use the nlargest() function with the 'n' parameter set to 5 to get the top 5 values in a pandas DataFrame.
For example: df['column_name'].nlargest(5) will return the top 5 values in the specified column.
A scatter plot is a better representation for 3 numerical columns.
Use a scatter plot to show the relationship between the numerical columns.
Scatter plots are effective for visualizing correlations and patterns in data.
Each point on the plot represents a data point with values from all 3 columns.
Budgeting involves creating a financial plan for a specific period of time.
Identify the time period for the budget
Determine the sources of income
Estimate expenses and allocate funds accordingly
Regularly monitor and adjust the budget as needed
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