Question

Is there a way of listing ALL foreign keys in a SQLite database?

They don’t seem to be stored in sqlite_master and PRAGMA foreign_key_list('table') only lists one at a time.

Alternatively, is there a way of listing what foreign keys reference a table?

Answer 1

With the SQLite shell, use the .schema instruction, and use GREP to filter lines containing REFERENCES.

From shell.c in the SQLite repository, today’s version in the trunk, two queries:

SELECT sql
  FROM (
        SELECT sql sql, type type, tbl_name tbl_name, name name
          FROM sqlite_master
         UNION ALL
        SELECT sql, type, tbl_name, name
          FROM sqlite_temp_master
       )
 WHERE tbl_name LIKE shellstatic()
   AND type != 'meta'
   AND sql NOTNULL
 ORDER BY substr(type, 2, 1), name

and

SELECT sql
  FROM (
        SELECT sql sql, type type, tbl_name tbl_name, name name
          FROM sqlite_master
         UNION ALL
        SELECT sql, type, tbl_name, name
          FROM sqlite_temp_master
       )
 WHERE type != 'meta'
   AND sql NOTNULL
   AND name NOT LIKE 'sqlite_%'
 ORDER BY substr(type, 2, 1), name

The second one is probably what you are looking for.