[SPARK-28374] DataSourceV2: Add method to support INSERT ... IF NOT EXISTS

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Ryan Blue
• Created: 12/Jul/19 22:26
• Updated: 15/Jul/19 06:03

Description

This is a follow-up to PR #24832 (comment). The SQL parser supports INSERT ... IF NOT EXISTS to validate that an insert did not write into existing partitions. This requires the addition of a support trait for the write builder, so should be done as a follow-up.