PySpark Koans

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Delta LakeKoan 105

Table History

View the history of operations on a Delta table. Replace ___ with the correct code.

How it works: Replace the ___ blanks in the code editor with the correct PySpark code, then hit Run Code. Stuck? Try the Hint button.

Setup (read-only)

_reset_delta_tables()

# Create and modify table multiple times
data = [("Alice", 100)]
df = spark.createDataFrame(data, ["name", "balance"])
df.write.format("delta").save("/data/accounts")

# Make some updates
data2 = [("Alice", 100), ("Bob", 200)]
df2 = spark.createDataFrame(data2, ["name", "balance"])
df2.write.format("delta").mode("overwrite").save("/data/accounts")

Your CodeCtrl/Cmd+Enter to run

Output

Output will appear here...