Compound primary key for foreign_keys table in _internal

datasette/utils/internal_db.py

@@ -66,7 +66,8 @@ async def init_internal_db(db):
         "to" TEXT,
         "on_update" TEXT,
         "on_delete" TEXT,
-        "match" TEXT
+        "match" TEXT,
+        PRIMARY KEY (database_name, table_name, id, seq)
     )
     """,
         block=True,

tests/test_internal_db.py

@@ -59,7 +59,6 @@ def test_internal_foreign_keys(app_client):
         "on_update",
         "on_delete",
         "to",
-        "rowid",
         "id",
         "match",
         "database_name",