[CALCITE-5478] Use highest input precision for datetimes in SqlTypeFactoryImpl.leastRestrictive

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.34.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Gian Merlino
• Reporter: Gian Merlino
• Created: 14/Jan/23 08:28
• Updated: 14/Mar/23 13:53
• Resolved: 23/Feb/23 23:20

Description

For example: leastRestrictive(TIMESTAMP(3), TIMESTAMP(0)) would be TIMESTAMP(3), not TIMESTAMP(0).

Some code exists to do this for other types, but not datetimes.

Issue Links

• links to: GitHub Pull Request #3029