[SPARK-45844] Implement case insensitivity for XML

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.5.0
• Fix Version/s: 4.0.0
• Component/s: SQL
• Labels: pull-request-available
• Assignee: Shujing Yang
• Reporter: Shujing Yang
• Created: 08/Nov/23 19:40
• Updated: 15/Nov/23 02:17
• Resolved: 14/Nov/23 04:55

Description

Currently, we don't follow the `SQLConf` of case insensitivity in XML, which is inconsistent with other file formats. This PR implements the case-insensitive behavior for schema inference and file reads.

Issue Links

• links to: GitHub Pull Request #43722
• links to: GitHub Pull Request #43802