不需要。

在 MySQL 中，执行 `ANALYZE TABLE` 后，通常不需要手动执行 `FLUSH TABLE` 来让优化器重新加载新的统计信息。 `ANALYZE TABLE` 命令本身会更新表的统计信息，优化器会在后续的查询中自动使用这些更新后的信息。

官方的说明：

During the analysis, the table is locked with a read lock for InnoDB and MyISAM.

ANALYZE TABLE removes the table from the table definition cache, which requires a flush lock. If there are long running statements or transactions still using the table, subsequent statements and transactions must wait for those operations to finish before the flush lock is released. Because ANALYZE TABLE itself typically finishes quickly, it may not be apparent that delayed transactions or statements involving the same table are due to the remaining flush lock.

不需要。

手动执行FLUSH TABLE来使优化器重新加载新的统计信息。ANALYZE TABLE命令本身就会更新表的统计信息，并且这个更新通常是立即对查询优化器可见的。MySQL的查询优化器在生成执行计划时会自动使用最新的统计信息。