有一种说法，当一个表格经常发生变化时，如果在这张表上建立聚集索引，会容易遇到页拆分（page split）。所以建立聚集索引会影响性能。
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Page Split（页切分） SQL Server在Insert/Update时，如果要更新的page已经存储满，无法容纳下新的数据，则SQL Server将这个page的一半数据切分出...
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"This was exactly 52 years ago, " he says, turning to a page split into two columns.
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They looked at the monstrous 345-page prospectus describing the split-off that created Liberty and passed on the offer.
FORBES: The Inside Track
Google co-founders LarryPageLarry Page and SergeyBrinSergey Brin so far have resisted requests to split their company's stock so more people could afford to buy a few shares.
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