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Mysql OCP 33题

驚鴻飛雪 2022-08-03 阅读 209


What does the possible_keys column in this output denote?

Mysql OCP 33题_java


A. if it is possible for you to include any indexes in your query

B. whether there are any indexes on the tables that you are querying

C. if there are any indexes that may be used to solve this query

D. whether there are any indexes in your query

Answer: C

A. 在Query中可能包含的索引信息
B. 查询的表上包含了一些索引
C. Query中可以使用的索引
D. 在Query中包含的索引信息

版权声明:本文为博主原创文章,未经博主允许不得转载。

MYSQL

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