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In most cases skip indices should only be considered once other alternatives have been exhausted - specifically this advanced functionality should only be used after investigating other alternatives such as modifying the primary key, using projections, or materialized views. In general, only consider skip-indices if there is a strong correlation between the primary key and the targeted, non-primary column/expression. In the absence of any real correlation, the skipping index will match for most blocks - resulting in all granules being read into memory and evaluated. In this case, the index cost has been incurred for no benefit, effectively slowing the full table scan.，更多细节参见传奇私服官网
用中长期规划指导经济社会发展是我们党治国理政的重要方式。。业内人士推荐手游作为进阶阅读
lookout for what might be important in the future.。关于这个话题，今日热点提供了深入分析
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