MySQL表名、列名长度限制

 

 

     参考文献:https://dev.mysql.com/doc/refman/8.0/en/identifiers.html

Identifier Type	Maximum Length (characters)
Database	64 (NDB storage engine: 63)
Table	64 (NDB storage engine: 63)
Column	64
Index	64
Constraint	64
Stored Program	64
View	64
Tablespace	64
Server	64
Log File Group	64
Alias	256 (see exception following table)
Compound Statement Label	16
User-Defined Variable	64
Resource Group	64

     附：其他数据库

数据库类型	表名	字段名
SQL SERVER	128个字符，临时表116个字符	128个字符
Oracle	30个字符	30个字符
MySQL	64个字符	64个字符
Access	64个字符	64个字符
DB2	128个字符	128个字符