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org.apache.spark.sql.catalyst.expressions

MetadataAttributeWithLogicalName

object MetadataAttributeWithLogicalName

A MetadataAttribute that works even if the attribute was renamed to avoid a conflict with some column name in the schema. See also LogicalPlan.getMetadataAttributeByName.

- apply() creates a logically-named attribute with the given physical name. - unapply() matches a MetadataAttribute and also returns its logical name.

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