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Split and explode a text column

A dataframe clauses_df with 100 rows is provided. It has a column clause and a row id. Each clause is a string containing one or more words separated by spaces.

Deze oefening maakt deel uit van de cursus

Introduction to Spark SQL in Python

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Oefeninstructies

  • Split the clause column into a column called words, containing an array of individual words.
  • Explode the words column into a column called word.
  • Count the resulting number of rows.

Praktische interactieve oefening

Probeer deze oefening eens door deze voorbeeldcode in te vullen.

# Split the clause column into a column called words 
split_df = clauses_df.select(____('clause', ' ').____('words'))
split_df.show(5, truncate=False)

# Explode the words column into a column called word 
exploded_df = split_df.____(____('____').____('word'))
exploded_df.show(10)

# Count the resulting number of rows in exploded_df
print("\nNumber of rows: ", ____)
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