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org.apache.spark.sql.delta.stats

SkippingEligibleColumn

object SkippingEligibleColumn

An extractor that matches on access of a skipping-eligible column. We only collect stats for leaf columns, so internal columns of nested types are ineligible for skipping.

NOTE: This check is sufficient for safe use of NULL_COUNT stats, but safe use of MIN and MAX stats requires additional restrictions on column data type (see SkippingEligibleLiteral).

returns

The path to the column and the column's data type if it exists and is eligible. Otherwise, return None.

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