Tag: Big Data

PySpark @ Freshers.in

Computing the kurtosis value of a numeric column in a DataFrame in PySpark-kurtosis

The kurtosis function in PySpark aids in computing the kurtosis value of a numeric column in a DataFrame. Kurtosis gauges…

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PySpark @ Freshers.in

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…

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PySpark @ Freshers.in

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…

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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…

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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…

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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…

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PySpark @ Freshers.in

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…

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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…

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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….

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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…

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