feat: add a new col and populate it

db/2_wolves-id.sql

@@ -0,0 +1,16 @@
+
+-- add a col for the wolves ID
+ALTER TABLE accounts ADD COLUMN id_wolves integer DEFAULT 0;
+
+-- fill in the values
+UPDATE accounts
+SET id_wolves=(
+    SELECT id_wolves
+    FROM accounts_wolves
+    WHERE accounts.mail=accounts_wolves.email
+)
+WHERE (
+    SELECT id_wolves
+    FROM accounts_wolves
+    WHERE accounts.mail=accounts_wolves.email
+) IS NOT NULL