Uses of Class
org.apache.drill.exec.physical.impl.scan.project.StaticColumnLoader
Package
Description
Provides run-time semantic analysis of the projection list for the
scan operator.
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Uses of StaticColumnLoader in org.apache.drill.exec.physical.impl.scan.project
Modifier and TypeClassDescriptionclass
Populate metadata columns either file metadata (AKA "implicit columns") or directory metadata (AKA "partition columns.") In both cases the column type is nullable Varchar and the column value is predefined by the projection planner; this class just copies that value into each row.class
Create and populate null columns for the case in which a SELECT statement refers to columns that do not exist in the actual table.