Question

I have 3 tables (archive has many sections, section (may) belong to many archives):

• archive

  • id PK
  • description

• archive_to_section

  • archive_id PK FK
  • section_id PK FK

• section

  • id PK
  • description

What would the SQL look like to list all the sections that belong a certain archive id?

I am just learning SQL. From what I’ve read it sounds like I would need a join, or union? FYI I’m using postgres.

---

[Edit] This is the answer from gdean2323 written without aliases:

SELECT section.*  FROM section  INNER JOIN archive_to_section  ON section.id = archive_to_section.section_id  WHERE archive_to_section.archive_id = $this_archive_id 

Answer 1

SELECT s.*  FROM section s INNER JOIN archive_to_section ats ON s.id = ats.section_id  WHERE ats.archive_id = 1