Фото: Elizabeth Frantz / Reuters
谁家的模型能成为开发者的首选,谁就等于接上了指数级增长的需求管道。。关于这个话题,新收录的资料提供了深入分析
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The effectiveness of this technique depends on whether the query can be run entirely in a streaming fashion. Some queries, such as SELECT * FROM table LIMIT 10 will scan only a few granules of the first few parts before reaching 10 results and returning the result to the user. This is also true for cases where the user orders the SELECT by a primary key field due to the optimize_read_in_order setting defaulting to 1. However, if the user runs SELECT a from table ORDER BY b LIMIT N, whereby the table is ordered by a and not by b, ClickHouse cannot avoid reading the entire table i.e., no early termination of the query is possible.
2024年12月25日 星期三 新京报,推荐阅读新收录的资料获取更多信息