[SPARK-44351] Make some syntactic simplification

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.5.0
• Fix Version/s: 3.5.0
• Component/s: SQL
• Assignee: Yang Jie
• Reporter: Yang Jie
• Created: 10/Jul/23 06:28
• Updated: 10/Jul/23 15:05
• Resolved: 10/Jul/23 15:05

Description

• Use `exists` instead of `find` and `emptiness check`
• Use `orNull` instead of `etOrElse(null)`
• Use `getOrElse(key, value)` instead of `get(key).getOrElse(value)` on map
• Use `find` instead of `filter` + `headOption`