Walkthrough

Change default behavior of the identifier_case_switch GUC from INTERCHANGE to NORMAL across runtime initialization, sample config, and initdb defaults and help text.

Changes

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Small, consistent value changes across three files.
• Pay attention to:
  • Correct enum/value mapping and compilation in ivy_guc.c.
  • Consistency between sample config, initdb text, and runtime default.

Possibly related PRs

• set identifier_vase_switch to value from pg_control file #800 — Related changes to initialization and runtime handling of ivorysql.identifier_case_switch, including defaults and pg_control interactions.

Suggested reviewers

• gaoxueyu
• jiaoshuntian

Poem

🐰 A tiny toggle hops to normal light,
From INTERCHANGE it finds the right,
Defaults aligned, the field is neat,
Identifiers march in orderly feet. 🥕

Pre-merge checks and finishing touches

Learnt from: OreoYang
Repo: IvorySQL/IvorySQL PR: 931
File: src/backend/oracle_parser/ora_gram.y:0-0
Timestamp: 2025-10-24T08:19:29.453Z
Learning: In IvorySQL’s parser (src/backend/oracle_parser/ora_gram.y and related headers), downcase_identifier has the 4-argument signature:
extern char *downcase_identifier(const char *ident, int len, bool warn, bool truncate);

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