# Tag: Spark_Interview

## PySpark function that is used to convert angle measures from degrees to radians.

Within its extensive library of functions, radians plays a crucial role for users dealing with trigonometric operations. The radians function in…

## PySpark function that is used to extract the quarter from a given date.

The quarter function in PySpark is used to extract the quarter from a given date, aiding in the analysis and…

## Raising each element of a column to the power of a specified value in PySpark

In PySpark, the pow function is used to raise each element of a column to the power of a specified…

## Dividing an ordered dataset into a specified number of approximately equal segments using PySpark

The ntile function in PySpark is used for dividing an ordered dataset into a specified number of approximately equal segments,…

## How to find the date of the first occurrence of a specified weekday after a given date.

PySpark, the Python API for Apache Spark, offers a plethora of functions for handling big data efficiently. One such function…

## Replacing NaN (Not a Number) values with a specified value in a column : nanvl

The nanvl function in PySpark is used to replace NaN (Not a Number) values with a specified value in a…

## Computing the average value of a numeric column in PySpark

The mean function in PySpark is used to compute the average value of a numeric column. This function is part…

## Concatenating two or more maps into a single map : map_concat

The map_concat function in PySpark is designed to concatenate two or more maps into a single map. It merges key-value…

## Removing leading spaces (spaces on the left side) from a string in PySpark

PySpark, a leading tool in big data processing, provides several functions for string manipulation, one of which is ltrim. This…

## Adding a new column to a DataFrame with a constant value

The lit function in PySpark is a straightforward yet powerful tool for adding constant values as new columns in a…