Pyspark split and get last element. sql. Learn how to efficiently extract the last string after a delimiter in a column with PySpark. 4, you can use split built-in function to split your string then use element_at built-in function to get the last element of your obtained array, as follows: Dec 23, 2024 · Learn and Practice on almost all coding interview questions asked historically and get referred to the best tech companies Jan 12, 2022 · Use element_at function with negative index -1 for last element of an array column. This is often used to extract the day from a date, or the last name in a full name string. Nov 9, 2023 · This tutorial explains how to split a string in a column of a PySpark DataFrame and get the last item resulting from the split. 0: split now takes an optional limit field. If not provided, default limit value is -1. It will return the last non-null value it sees when ignoreNulls is set to true. A step-by-step guide awaits you! ---more Jul 23, 2025 · To split the fruits array column into separate columns, we use the PySpark getItem () function along with the col () function to create a new column for each fruit element in the array. Oct 1, 2025 · Using size(split()) - 1 gives you the last element of the split array. Nov 7, 2016 · 1 You can also use the getItem method, which allows you to get the i-th item of an ArrayType column. If all values are null, then null is returned. Also, you need to use when expression to check whether the column gender is null, not Scala if-statement: Jan 18, 2026 · To summarize, when seeking to retrieve the last component of a delimited string in a PySpark DataFrame, the recommended, production-ready technique is to use chained withColumn calls utilizing split and size. Mar 30, 2025 · Learn how to extract the last word from a string column in PySpark using the split and element_at functions. The function by default returns the last values it sees. 🚀 PySpark Interview Series: String Manipulation 🚀 𝐒𝐜𝐞𝐧𝐚𝐫𝐢𝐨: Extracting Insights from Delimited Strings (List-to-Count) 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰 pyspark. last(col, ignorenulls=False) [source] # Aggregate function: returns the last value in a group. Oct 28, 2021 · Since Spark 2. last # pyspark. The core principle is simple yet powerful: calculate the length of the split array dynamically and access the index at Length - 1. functions module. This step-by-step guide will show you the necessary code and con. functions. Here's how I would do it: Changed in version 3. array of separated strings. To efficiently split a column and dynamically retrieve its final element, developers must utilize the highly optimized, built-in functions available in the pyspark. rwdt wtxycgi gieu htftlt xzrdqyk