“name”列的类型是CHAR(30)，不允许为空，而且根据此列建立了一个索引。

The "name" column will be a CHAR (30), set to NOT NULL, and have a unique index on it.

youdao

“name”列的类型是CHAR(30)，不允许为空，而且根据此列建立了一个索引。

The "name" column will be a CHAR (30), set to NOT NULL, and have a unique index on it.

youdao