What is the order of tables shown in an EXPLAIN output?
A. It lists tables from the smallest to the largest.
B. It lists tables in the order in which their data will be read.
C. It lists tables from the most optimized to the least optimized.
D. It lists tables in the order in which they are specified in the statement that is being explained.
Answer: B

B.它按读取数据的顺序列出表http://www.cndba.cn/hbhe0316/article/22778http://www.cndba.cn/hbhe0316/article/22778

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