DB scripts and migrations

db/fix-url-ports.sql

@@ -0,0 +1,22 @@
+-- Here's an SQL script that will find and remove snapshots without port numbers
+-- when there exists a duplicate with the default port 1965.
+
+-- Before running this DELETE though, you might want to
+-- verify the matches first with this SELECT:
+WITH duplicates AS (
+    SELECT s1.id as id_without_port, s2.id as id_with_port, s1.url as url_without_port, s2.url as url_with_port
+    FROM snapshots s1
+             JOIN snapshots s2
+                  ON s2.url = s1.url || ':1965'
+)
+SELECT * FROM duplicates;
+
+-- Now delete them for real:
+WITH duplicates AS (
+    SELECT s1.id as id_without_port, s2.id as id_with_port, s1.url as url_without_port, s2.url as url_with_port
+    FROM snapshots s1
+             JOIN snapshots s2
+                  ON s2.url = s1.url || ':1965'
+)
+DELETE FROM snapshots
+WHERE id IN (SELECT id_without_port FROM duplicates);