[SPARK-32958] Column pruning for JsonToStructs

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: SQL
• Assignee: L. C. Hsieh
• Reporter: L. C. Hsieh
• Created: 21/Sep/20 20:16
• Updated: 03/Oct/20 21:55
• Resolved: 03/Oct/20 21:55

Description

We could do column pruning for JsonToStructs expression if we only require some fields from it.

Issue Links

• links to: [Github] Pull Request #29900 (viirya)