57 lines
1.2 KiB
Markdown
57 lines
1.2 KiB
Markdown
---
|
|
{
|
|
"title": "DROP FUNCTION",
|
|
"language": "zh-CN"
|
|
}
|
|
---
|
|
|
|
<!--
|
|
Licensed to the Apache Software Foundation (ASF) under one
|
|
or more contributor license agreements. See the NOTICE file
|
|
distributed with this work for additional information
|
|
regarding copyright ownership. The ASF licenses this file
|
|
to you under the Apache License, Version 2.0 (the
|
|
"License"); you may not use this file except in compliance
|
|
with the License. You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing,
|
|
software distributed under the License is distributed on an
|
|
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
KIND, either express or implied. See the License for the
|
|
specific language governing permissions and limitations
|
|
under the License.
|
|
-->
|
|
|
|
# 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
|