[Err] 1118 - Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhead, check the manual. You have to change some columns to

今天創建mysql表時，遇到了[Err] 1118 - Row size too large的問題，sql如下：
drop table if exists Orders;
create table Orders
(
orderNo varchar(50) not null comment '訂單號',

invoice varchar(21845) comment 'JSON 發票信息',

primary key (orderNo)
);
提示的錯誤為：

[Err] 1118 - Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535. This includes storage overhead, check the manual.
 You have to change some columns to TEXT or BLOBs

去網絡上查找問題，找到原因：
一個varchar/char占3個字節  每行數據不能超過65535個字節  所以每行的varchar/char不能超過21845
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原文鏈接：https://blog.csdn.net/mashining1988111/article/details/53022969