- Steve Jorgensen ---- 我会给你写一个较短的程序, 但是我没有时间。According to the literature, as far as performance goes, an index willprobably never even get used on a table with only 6 records. First of all,the whole table will probably get cached into memory in a negligible amountof time, and second, it would take more processing power to use the indexto locate a record than to simply look through the table rows. Theoptimizer should figure this out and ignore any index you may haveregardless of whether it''s a byte, long, or whatever.- Steve Jorgensen----I would have written you a shorter program,but I didn''t have the time. 这篇关于键数值数据类型的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 上岸,阿里云!
08-20 09:18
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