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【以下的回答经过翻译处理】 宽列的影响主要出现在数据查询时。即如果用户在表中查询其他列,那宽列不会影响查询性能。如果该列经常被查询,最好的做法是将相关部分信息分析出来并加载到专用的、合适大小的列中,来满足出报表的需求。您可以将原始数据保留在当前列中,但建议用户不要经常访问这些列。
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