columns
attribute in Spark is used to retrieve the list of column names in a DataFrame. It provides a quick and easy way to inspect the structure of the DataFrame and access the names of all columns. This is particularly useful for debugging, data exploration, and dynamic column access.
DESCRIBE table_name
to achieve similar results.columns
is lightweight and does not involve data movement or processing.columns
attribute is used to retrieve the list of column names in a DataFrame.DESCRIBE table_name
.