# 全文索引
Shop 表的部分字段如下:
```mysql
create table shop (
id int primary key auto_increment,
description varchar(8000)
-- ...
)
```
现在 Joe 要给 description 字段加上全文索引,他应该怎么做?
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* `show tables;` 列出所有表
## 答案
```mysql
alter table shop add fulltext(description);
```
## 选项
### A
```mysql
alter table shop add index fulltext(description);
```
### B
```mysql
alter table shop create fulltext(description);
```
### C
```mysql
alter table shop alter description add fulltext(description);
```