WriteDelta Logical Operator¶

WriteDelta is a RowLevelWrite logical operator.

Creating Instance¶

WriteDelta takes the following to be created:

• Table (NamedRelation)
• Condition (Expression)
• Query (LogicalPlan)
• Original Table (NamedRelation)
• WriteDeltaProjections
• DeltaWrite

WriteDelta is created when:

• RewriteDeleteFromTable logical analysis rule is executed (and requested to buildWriteDeltaPlan for SupportsDelta row-level operations)
• RewriteMergeIntoTable logical analysis rule is executed (and buildWriteDeltaPlan for SupportsDelta row-level operations)
• RewriteUpdateTable logical analysis rule is executed (and buildWriteDeltaPlan for SupportsDelta row-level operations)

Query Planning¶

WriteDelta is planned to WriteDeltaExec physical operator by DataSourceV2Strategy execution planning strategy.