[FLINK-12457] Remove char support in blink

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.9.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: Jingsong Lee
• Reporter: Jingsong Lee
• Created: 09/May/19 06:44
• Updated: 13/May/19 03:33
• Resolved: 13/May/19 03:33

Description

Sql types don't support java char. CharType(InternalType) in blink and CharType of the new type system are very confusing, we should remove the current support for Java char in blink.

Issue Links

• is related to: FLINK-12251 Rework the Table API & SQL type system
• links to: GitHub Pull Request #8379