[SPARK-34263] Simplify the code for treating unicode/octal/escaped characters in string literals

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 3.2.0
• Component/s: SQL
• Assignee: Kousuke Saruta
• Reporter: Kousuke Saruta
• Created: 27/Jan/21 11:59
• Updated: 21/Jun/24 22:03
• Resolved: 02/Feb/21 16:10

Description

In the current master, the code for treating unicode/octal/escaped characters in string literals is a little bit complex so let's simplify it.

Issue Links

• is related to: SPARK-48686 Improve performance of ParserUtils.unescapeSQLString
• links to: [Github] Pull Request #31362 (sarutak)