[SPARK-41323] Support CURRENT_SCHEMA() as alias for CURRENT_DATABASE()

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: Spark Core
• Assignee: Serge Rielau
• Reporter: Serge Rielau
• Shepherd: Wenchen Fan
• Created: 29/Nov/22 18:33
• Updated: 30/Nov/22 06:56
• Resolved: 30/Nov/22 06:56

Description

CURRENT_SCHEMA is the keyword used in thE SQL Standard to refer to the current namespace. It is also supported my multiple other vendors:
PostgreSQL

Redshift

Snowflake
Db2
and others

Issue Links

• links to: [Github] Pull Request #38840 (srielau)
• links to: [Github] Pull Request #38840 (srielau)