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PySpark SQL Functions | trim method
schedule Mar 5, 2023
Last updated local_offer
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PySpark SQL Functions' trim(~) method returns a new PySpark column with the string values trimmed, that is, with the leading and trailing spaces removed.
Parameters
1. col | string
The column of type string to trim.
Return Value
A new PySpark Column.
Examples
Consider the following PySpark DataFrame:
+---------+---+| name|age|+---------+---+| Alex | 20|| Bob| 30||Cathy | 40|+---------+---+
Here, the values in the name column have leading and trailing spaces.
Trimming columns in PySpark
To trim the name column, that is, to remove the leading and trailing spaces:
Here, the alias(~) method is used to assign a label to the Column returned by trim(~).
To get the original PySpark DataFrame but with the name column updated with the trimmed version, use the withColumn(~) method:
+-----+---+| name|age|+-----+---+| Alex| 20|| Bob| 30||Cathy| 40|+-----+---+
Published by Isshin Inada
Edited by 0 others
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Official PySpark Documentation
https://spark.apache.org/docs/3.1.1/api/python/reference/api/pyspark.sql.functions.trim.html
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