TruncateTableExec Physical Operator¶

TruncateTableExec is a LeafV2CommandExec physical operator that represents the following logical operators at execution:

• DeleteFromTable logical operator with a DataSourceV2ScanRelation over a TruncatableTable table with no WHERE clause
• TRUNCATE TABLE SQL command (with no PARTITION clause)

Creating Instance¶

TruncateTableExec takes the following to be created:

• TruncatableTable
• Refresh Cache Procedure (() => Unit)

TruncateTableExec is created when:

• DataSourceV2Strategy execution planning strategy is executed

Output Schema¶

output: Seq[Attribute]

output is empty.

Executing Command¶

run(): Seq[InternalRow]

run requests the TruncatableTable to truncateTable. Only if successful, run executes this refreshCache procedure.

run returns an empty collection.