fix: remove inherited columns after parent removal

[G-Glitch404]

Summary

Fixes #10470 by preserving the parent table OID when inherited columns are loaded through the table properties path.

Previously, get_formatted_columns() copied inheritedfrom from the inherited column metadata but discarded inheritedid. After reopening a saved table, the frontend could no longer identify the inherited columns belonging to a parent table that was removed from Inherited from.

This change preserves inheritedid, allowing the existing inherited-column removal logic to work correctly for previously saved inherited tables.

Tests

Added a regression test covering preservation of the inherited parent OID during column formatting.

The regression test passes in the initialized pgAdmin test environment.

Summary by CodeRabbit

• Bug Fixes
  • Inherited columns now retain their parent table and OID information when displayed.
  • Existing parent information is preserved when multiple parent tables contain columns with the same name.

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📥 Commits

Reviewing files that changed from the base of the PR and between dce5b47 and 0ff5414.

📒 Files selected for processing (2)

• web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/test_serial_detection_unit.py
• web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/utils.py

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Walkthrough

The formatter now copies a matching parent column’s OID when the child column has no inherited OID. Tests cover parent-column data and verify that existing OIDs are retained.

Changes

Inherited column formatting

Layer / File(s)	Summary
Preserve inherited column OIDs web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/utils.py, web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/test_serial_detection_unit.py	get_formatted_columns copies a matching parent column’s OID only when the child column has no inheritedid. The test helper passes parent-column data, and tests check parent table and OID values, including preservation of an existing OID.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix · Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to 0ff54

The change preserves the parent OID for inherited columns after a table is saved and reopened, so removing a parent in the table dialog now removes its inherited columns. No merge-blocking risk was found.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 13ac4

The change restores parent identifiers for inheritance editing without adding an endpoint or expanding permissions. A column shared by multiple parents can still be associated with only one parent in the editor. The inspected save path prevents that editor-row removal from directly dropping an inherited database column.

Retained concerns

• Low · architecture · inferred: The formatter assigns a single parent OID using the last matching column name. For a column supplied by multiple parents, removing that selected parent can hide the editor row even while another parent remains. The assignment changes the identity used after reopening; this is an editor ownership inconsistency, not demonstrated database column loss or privilege escalation.

Security review details

Security Blast Radius

• inferred — The demonstrated exposure is the displayed column collection for the table being edited. The changed identifier is catalog-derived parent metadata; no new independently callable production entrypoint or authority-bearing operation was identified in the changed ranges.

Trust Boundaries and Controls

• inferred — Restoring inheritedid changes client-side row selection, not authorization. The inspected database-deletion guard provides counterevidence against treating an automatically removed inherited editor row as a new destructive SQL capability.

Resilience and Maintainability Implications

• observed — The existing update path checks table existence and reports SQL execution failures. A later metadata-fetch failure can also return an error after execution. These paths were inspected statically; transaction atomicity and runtime recovery were not established, and this PR does not add a persistence step.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 16.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 6 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: removing inherited columns after removing a parent table.
Linked Issues check	✅ Passed	Issue #10470 requires reopened inherited columns to carry the parent OID used by the removal logic. get_formatted_columns() now copies other_col['inheritedid'] when the formatted column has no `in…
Out of Scope Changes check	✅ Passed	The changes are limited to inherited-column metadata in get_formatted_columns() and its regression test. Both changes directly support issue #10470. No unrelated change is demonstrated.

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at
@web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/utils.py:
- Line 333: In the same-name parent column handling loop, stop assigning each
parent’s OID to the shared `col['inheritedid']`; remove that assignment while
preserving the per-parent `inheritedfrom` tracking so deselecting one parent
does not erase a column still inherited from another.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: Repository: pgadmin-org/pgadmin4/.coderabbit.yaml
• Review profile: CHILL
• Plan: Advanced
• Run ID: 0d177a9b-1d9b-4130-b2d2-51e1ad0dfd7b

📥 Commits

Reviewing files that changed from the base of the PR and between ecb6446 and 13ac49c.

📒 Files selected for processing (2)

• web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/tests/test_serial_detection_unit.py
• web/pgadmin/browser/server_groups/servers/databases/schemas/tables/columns/utils.py

Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 7 remain after this review.