含义区分：ANALYZE TABLE
https://dev.mysql.com/doc/refman/5.7/en/analyze-table.html
ANALYZE TABLE performs a key distribution analysis and stores the distribution for the named table or tables.
执行键分布分析，并存储指名表的分布。更新表的索引统计信息
含义区分：OPTIMIZE TABLE
https://dev.mysql.com/doc/refman/5.7/en/optimize-table.html
OPTIMIZE TABLE reorganizes the physical storage of table data and associated index data, to reduce storage space and improve I/O efficiency when accessing the table.
重新组织表数据和相关索引数据的物理存储，以减少访问表时的存储空间并提高I/O效率。会重新组织数据文件中的数据