feat: add support for PostgreSQL table inheritance in schema export

[kishansinghifs1]

Summary

This PR adds full support for PostgreSQL table inheritance in the schema export generator (#472).

---

What's Included

• ✅ Proper generation of INHERITS clause in CREATE TABLE statements.
• ✅ Child tables only include non-inherited fields in SQL output.
• ✅ Parent table fields are automatically inherited by child tables.
• ✅ Maintains correct handling of:
  • PRIMARY KEY, UNIQUE, NOT NULL
  • DEFAULT, CHECK, and ARRAY modifiers.
• ✅ Table and column comments are still supported.

---

Implementation Notes

• Used table.inherits array to determine parent table(s).
• Computed inheritedFieldNames from parent tables to avoid duplication.
• Adjusted PRIMARY KEY generation to apply only to non-inherited fields in child tables.

---

🖥️ Screen Recording

![Watch demo](

freecompress-Recording.2025-06-14.112023.mp4

)

[vercel]

Someone is attempting to deploy a commit to the dottle's projects Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
drawdb	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 14, 2025 9:56am