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# DROP FUNCTION
## description
### Syntax

```
DROP FUNCTION function_name
    (arg_type [, ...])
```

### Parameters

> `function_name`: 要删除函数的名字
> 
> `arg_type`: 要删除函数的参数列表
> 


删除一个自定义函数。函数的名字、参数类型完全一致才能够被删除

## example

1. 删除掉一个函数

```
DROP FUNCTION my_add(INT, INT)
```

## keyword

    DROP,FUNCTION