第三,由于聚集索引键是整个表中最冗余的数据,你应当确疑您的聚集键是不易变的(not volatile),如果一个聚集健转变,它有以下几个反作用:1、它会引止聚集索引内的记载的搬家,形成页page的分别取碎片。
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A good time for homebuying is when a buyer can afford to buy a home, the market is not volatile and affordable financing is available.
买房的好时机就是当一个购房者买得起一套房子,市场稳定并且能够支付得起房贷。
I've tried in the past to explain why we should focus on sluggish, sticky prices, not volatile prices like commodities - hence core inflation.
之前我一直在解释为什么该看变动迟缓的黏性价格,而不是象日用商品那样的速动价格——即核心通胀。
So even if, on average, the stock is expected to not move at all from where it starts, some stocks will be expected to just trundle along without much change, not very volatile.
所以即使平均而言,股票应该是不会,和开盘的时候有什么区别,有一些股票可能会,没什么变化,不是很反复无常。
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