給原表添加列(alter table add column)的時候報錯:
error 1062(23000): duplicate entry '1218652' for key 'PRIMARY'
原因參考這兩篇:
http://blog.itpub.net/28218939/viewspace-2654121/
https://www.bbsmax.com/A/GBJrlKoqd0/
https://cloud.tencent.com/developer/article/1006513
額外知識補充可以參考如下:
https://www.cnblogs.com/cchust/p/4639397.html
https://blog.csdn.net/finalkof1983/article/details/88355314
https://www.cnblogs.com/cchust/category/802863.html
https://dev.mysql.com/doc/refman/5.7/en/innodb-online-ddl-operations.html#online-ddl-column-syntax-notes