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…
