# `Fn_json_extract` (function)

> 根据key值获取json字符串值


- **Type:** FUNCTION
- **Returns:** `text`
- **Deterministic:** NO
- **SQL data access:** CONTAINS SQL
- **Created:** 2026-04-27 19:10:14
- **Last altered:** 2026-04-27 19:10:14

## Parameters

| # | Mode | Name | Type |
|---|---|---|---|
| 0 | RETURN | `` | `text` |
| 1 | IN | `p_jsonstr` | `text` |
| 2 | IN | `p_key` | `varchar(255)` |

## Body

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

## Narrative

_No human-written narrative yet._