import sqlite3
from datetime import datetime
conn = sqlite3.connect('/home/hmo/MoFin/data/mofin.db')
for t, c in [('mtf_cache','updated_at'),('macro_context_log','created_at'),
             ('live_prices','updated_at'),('price_events','created_at'),('market_snapshots','created_at')]:
    try:
        row = conn.execute(f"SELECT MAX({c}) FROM {t}").fetchone()
        print(f"{t}.{c} MAX = {row[0]!r}")
        if row and row[0]:
            try:
                dt = datetime.fromisoformat(str(row[0]).replace('Z',''))
                print(f"   parsed OK: {dt}")
            except Exception as pe:
                print(f"   PARSE FAIL: {pe}")
    except Exception as e:
        print(f"{t}: QUERY ERROR {e}")