[CALCITE-4214] Make RelDataType.getSqlTypeName non-nullable

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.25.0
• Fix Version/s: 1.26.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Vladimir Sitnikov
• Reporter: Vladimir Sitnikov
• Created: 02/Sep/20 16:59
• Updated: 06/Oct/20 17:16
• Resolved: 27/Sep/20 21:05

Description

The code treated RelDataType.getSqlTypeName as non-nullable, so we need to update the javadoc and deal with abstract implementation that returns null.

Issue Links

• links to: GitHub Pull Request #2135