mysql 索引超767_mysql Index column size too large 超过767错误解决方案(转)

mysql在执行脚本时，报出了以下错误：

index column size too large. the maximum column size is 767 bytes

原因：

INNODB 引擎，UTF-8，主键字符串默认最大 767，需要修改

解决方案：

1. 对数据库进行设置

set global innodb_file_format = BARRACUDA

set global innodb_large_prefix = ON

注意: 在navicat中执行成功,不清楚重启数据库是否还有效

查看是否生效

show variables like ‘character%’;

show variables like ‘collation_%’;

show variables like ‘innodb_large_prefix’;

show variables like ‘innodb_file_format’;

2. 对脚本进行修改，添加ROW_FORMAT=DYNAMIC

create table test (……..) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC;

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