Someone

SELECT TOP 1 *
FROM [Item], [Category], [Bid]
WHERE [Item].[item_id] = [Bid].[item_id]
AND [Item].[category_id] = [Category].[category_id]
AND [Bid].[bidder_id] = ?
AND [Bid].[bid_id] = (SELECT TOP 1 [bid_id] FROM [Bid] WHERE [Bid].[item_id] = [Item].[item_id] ORDER BY [bid_id])