Tag: Spark_Interview
Identifying null values within a DataFrame in PySpark
PySpark’s isnull function serves the vital role of identifying null values within a DataFrame. This function simplifies the process of…
Handling missing numeric data in PySpark – isnan – Example included
pyspark.sql.functions.isnan In PySpark, the isnan function is primarily used to identify whether a given value in a DataFrame is NaN…
PySpark’s instr Function: Substring searches in Big Data
pyspark.sql.functions.instr The instr function in PySpark’s DataFrame API helps in determining the position of the first occurrence of a substring…
PySpark’s map_values Function : Extract the values from a map column.
In PySpark’s realm, the map_values function is employed to extract the values from a map column. Drawing a parallel to…
PySpark’s map_keys function : Function used to retrieve the keys of a map column.
PySpark provides, map_keys stands out when it comes to handling maps (dictionary-like structures in PySpark). In this article, we will…
Harnessing the power of PySpark’s grouping function : Understanding grouping indicators in PySpark
pyspark.sql.functions.grouping This function shines a light on the intricacies of groupings in aggregate operations, indicating whether a specified column in…
Column-wise comparisons in PySpark using the greatest function: Getting the maximum value with PySpark’s greatest function
pyspark.sql.functions.greatest In the vast universe of PySpark’s functionalities, there exists a function that often becomes the unsung hero when dealing…
PySpark’s expm1: Precision in exponential computations : Mastering exponential calculations in PySpark
pyspark.sql.functions.expm1 This function computes the result of e raised to the power of a given number, and then subtracts one….
Finding the largest value among the list of columns provided using PySpark : greatest
This article presents a thorough exploration of the greatest function, supported by real-world examples. The greatest function in PySpark identifies the…
Calculating the factorial of a given number using PySpark : factorial
This article offers a comprehensive view of the factorial function, alongside hands-on examples. The factorial function in PySpark calculates the factorial…
