MySQL partition table transformation

Someone has done mysql Partition transformation of ordinary tables , There are hundreds of watches G, Is there any good way to reduce downtime

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Other answers 1：

1、 Create a new table with the same structure as the original table , New partition

2、 Insert the old table into the new table in 2022.7.21 00:00:00 Previous data

3、 Table switching is performed during the idle period of business

4、 Index new tables 、 The trigger etc.

5、 Data supplement （ Put more than... In the original table 2021.7.21 00:00:00 The data of is added to the new table ）

Other answers 2：

Use InnoDB The partition table of the engine does not support foreign keys .

stay InnoDB Tables cannot use custom partitions that contain foreign keys ; If foreign keys have been used InnoDB surface , Cannot be partitioned .

InnoDB Table cannot contain a foreign key related to user-defined partition table ; User defined partition is used InnoDB surface , Cannot contain columns related to foreign keys .