Mysql之Specified key was too long; max key length is 767 bytes

Mysql之Specified key was too long; max key length is 767 bytes

mysq索引的字段都太長了，解決辦法：讓mysql支持比較長的索引,然後在插入表的時候，添加ROW_FORMAT=DYNAMIC ，自動格式化索引。

1. 數據庫層面的修改

show variables like 'innodb_large_prefix';  
show variables like 'innodb_file_format';
 
--修改最大索引長度限制
set global innodb_large_prefix=1; 
set global innodb_file_format=BARRACUDA;
-- 添加
set global innodb_file_format_max=BARRACUDA;

2. 建表語句的修改（直接使用navicat就不需要了）

-- 修改插入sql的語句添加ROW_FORMAT=DYNAMIC
create table idx_length_test_02
(
  id int auto_increment primary key,
  name varchar(255)
) 
ROW_FORMAT=DYNAMIC default charset utf8mb4;

原文地址：Mysql之Specified key was too long; max key length is 767 bytes