Add database copy utility

dbtransfer.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+# Utility for carrying over data from an older SQLite
+# database into a newer PostgreSQL one.
+
+# Edit this value:
+PgConnectionString = ''
+
+import sqlite3
+import psycopg2
+
+sldb = sqlite3.connect('users.db')
+slcur = sldb.cursor()
+pgdb = psycopg2.connect(PgConnectionString)
+pgcur = pgdb.cursor()
+
+pgcur.execute("""
+        CREATE TABLE IF NOT EXISTS userdata (
+        guild_id BIGINT,
+        user_id BIGINT,
+        zone TEXT NOT NULL,
+        last_active TIMESTAMPTZ NOT NULL DEFAULT now(),
+        PRIMARY KEY (guild_id, user_id)
+        )""")
+pgdb.commit()
+pgcur.execute("TRUNCATE TABLE userdata")
+pgdb.commit()
+
+slcur.execute('''
+    SELECT guild, user, zone, lastactive
+    FROM users
+    ''')
+
+for row in slcur:
+    pgcur.execute('''
+        INSERT INTO userdata (guild_id, user_id, zone, last_active)
+        VALUES (%s, %s, %s, to_timestamp(%s) at time zone 'utc')
+        ''', (int(row[0]), int(row[1]), row[2], int(row[3])))
+    pgdb.commit()
+    print(row)