[FLINK-17064] Improve literals conversion in ExpressionConverter

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.11.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: Dawid Wysakowicz
• Reporter: Dawid Wysakowicz
• Created: 09/Apr/20 07:53
• Updated: 15/Apr/20 16:19
• Resolved: 15/Apr/20 16:19

Description

There are couple of issues with the ExpressionResolver and literals conversion:
1. There is a lot of code duplication
2. Precision of certain types might get lost e.g. BINARY, CHAR

Issue Links

• relates to: FLINK-16379 Introduce fromValues in TableEnvironment
• links to: GitHub Pull Request #11694