# `IsNumeric` (function)

> 判断是否是数字（相当于sql Server中 IsNumeric函数）


- **Type:** FUNCTION
- **Returns:** `int`
- **Deterministic:** NO
- **SQL data access:** CONTAINS SQL
- **Created:** 2026-04-27 19:10:17
- **Last altered:** 2026-04-27 19:10:17

## Parameters

| # | Mode | Name | Type |
|---|---|---|---|
| 1 | IN | `str` | `varchar(25)` |

## Body

_Body is not pre-cached. To inspect: `mysql --defaults-file=~/.my.cnf -e 'SHOW CREATE FUNCTION `IsNumeric`'`._

## Narrative

_No human-written narrative yet._