伊藤信吾（Shingo Ito）
Terms & Conditions apply，更多细节参见新收录的资料
FT Edit: Access on iOS and web。新收录的资料是该领域的重要参考
The effectiveness of this approach, for both query performance and compression, relies on the user selecting good primary key columns via the ORDER BY clause when creating a table. In general, users should select columns for which they will often filter tables with more than 2 to 3 columns rarely required. The order of these columns is critical and can affect the compression and filtering by columns other than the first entry. For both the efficient filtering of secondary key columns in queries and the compression ratio of a table's column files, it is optimal to order the columns in a primary key by their cardinality in ascending order. A full explanation of the reasoning can be found here.，推荐阅读新收录的资料获取更多信息
我写下这些，不只是为了追问“银行的风控在哪里”，更希望所有人能从中看到——真正的防线，从来不是App、不是验证码，而是家人之间的理解与信任。