金店黄金的价格在12月20日继续开展，涨幅大约是每克三元左右，黄金的整体价格继续变高。目前黄金价格最高的店铺是包括周大福、六福、周六福、老庙、潮宏基，金至尊，这几家金店黄金价格的涨幅都是每克三元，报价为每
Is there a compact way with ActiveRecord to query for what id it\'s going to use next if an object was going to be p开发者_如何学Pythonersisted to the database? In SQL, a query like this would look so
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