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ParametersReturn ValueExamplesDuplicating string values in PySpark column
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chevron_leftPySpark SQL Functions
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PySpark SQL Functions | repeat method

schedule Aug 12, 2023
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PySpark SQL Functions' repeat(~) method duplicates string values n times.

Parameters

1. col | string or Column

The string-typed column to perform the repeat on.

2. n | int

The number of times to repeat the string values.

Return Value

A PySpark Column (pyspark.sql.column.Column).

Examples

Consider the following PySpark DataFrame:

df = spark.createDataFrame([["Alex", 20], ["Bob", 30]], ["name", "age"])
df.show()
+----+---+
|name|age|
+----+---+
|Alex| 20|
| Bob| 30|
+----+---+

Duplicating string values in PySpark column

To repeat the values in the name column twice:

import pyspark.sql.functions as F
df.select(F.repeat("name", 2)).show()
+---------------+
|repeat(name, 2)|
+---------------+
| AlexAlex|
| BobBob|
+---------------+

Note that we could also supply a Column object to repeat(~) like so:

import pyspark.sql.functions as F
# df.select(F.repeat(df.name), 2)).show()
df.select(F.repeat(F.col("name"), 2)).show()
+---------------+
|repeat(name, 2)|
+---------------+
| AlexAlex|
| BobBob|
+---------------+
robocat
Published by Isshin Inada
Edited by 0 others
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Official PySpark Documentation
https://spark.apache.org/docs/latest/api/python/reference/api/pyspark.sql.functions.repeat.html
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