from database import TradeDB
db = TradeDB()
try:
    sql = """
    SELECT DATE(recv_ts) as dt, source, COUNT(*) as cnt 
    FROM ws_orderbook 
    GROUP BY dt, source
    ORDER BY dt DESC
    LIMIT 10
    """
    rows = db.conn.execute(sql).fetchall()
    print("OB DATES:", [dict(r) for r in rows])
except Exception as e:
    print(f"ERROR: {e}")
finally:
    db.close()