In Intellij, how do I toggle between camel case and underscore spaced?

Question

At my company we have two different style guides for java vs sql. In java I have a field named historyOfPresentIllness and when i write the sql, I want to name it

Answer 1

From snake_case to CamelCase

• Find: (\w)[_]{1,1}([a-z])
• Replace: $1\U$2
• Settings:
  • Match Case
  • Regex

From CamelCase to snake_case:

• Find: ([A-Z])
• Replace: \_\L$1
• Settings:
  • Match Case
  • Regex