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Description
What is the problem the feature request solves?
Add support for Spark SQL size expression:
https://spark.apache.org/docs/latest/api/sql/index.html#size
From the documentation:
size(expr) - Returns the size of an array or a map. This function returns -1 for null input only if spark.sql.ansi.enabled is false and spark.sql.legacy.sizeOfNull is true. Otherwise, it returns null for null input. With the default settings, the function returns null for null input.
Describe the potential solution
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Additional context
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