Are query times linear in MySql?
Question
如果我有一个包含100行的表（每行具有或多或少的恒定大小），并且SELECT WHERE 1 = 1查询平均需要花费0.004秒才能完成，那么可以假定使用相同的SELECT WHERE 1 = 1但可以一百万行
totalTime = 1.000.000*0.004/100
1 answers
solution1
1 2013-08-27 09:29:36
No, it is not ok to assume that. There are many variables ranging from your hardware to your database structure to the version of MySQL you use that can all affect how the query time will scale with more records.
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