高价位车型带动下，蔚来去年第四季度汽车销售额达 316.06 亿元，同比增长达 80.9%。当季毛利同比增长 163.1% 达 60.74 亿元，汽车毛利率亦创三年新高达到 18.1%，去年同期仅为 13.1%。
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Primary keys are rightly the first tool users turn to when needing to accelerate queries. However, tables are limited to a single primary key, and query access patterns can render this ineffective i.e., for diverse use cases, queries which cannot exploit the primary key efficiently are inevitable. In these cases ClickHouse can be forced to perform a full table scan of each column when applying a WHERE clause condition. Often this will still be sufficiently fast, but in some cases users reach for data skipping indices, hoping to accelerate these queries easily.。whatsapp对此有专业解读