Weichen Xu created SPARK-28615:
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Summary: Add a guide line for dataframe functions to say column
signature function is by default
Key: SPARK-28615
URL: https://issues.apache.org/jira/browse/SPARK-28615
Project: Spark
Issue Type: Improvement
Components: Documentation, SQL
Affects Versions: 2.4.3
Reporter: Weichen Xu
Add a guide line for dataframe functions to say column signature function is by
default. like:
{code}
This function APIs usually have methods with Column signature only because it
can support not only Column but also other types such as a native string. The
other variants currently exist for historical reasons.
{code}
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