medium10 pts · first answer countssparkdelta-lakeschema-evolution

Appending a new column to Delta

You append a DataFrame with a new column discount to an existing Delta table and get a schema mismatch error. What lets the append add the column?

A.mode("overwrite") with no other optionB.option("inferSchema", "true")C.option("mergeSchema", "true")D.option("header", "true")

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