# 删除函数
Joe 将计税逻辑放到了 sp_idt 中,现在不需要 individual_income_tax 函数了,他应该怎样删除这个函数?
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* `show tables;` 列出所有表
## 答案
```sql
drop function individual_income_tax;
```
## 选项
### A
```sql
delete function individual_income_tax;
```
### B
```sql
remove function individual_income_tax;
```
### C
```sql
drop function individual_income_tax(decimal(12, 4));
```