JSON_PATH
JSON オブジェクトからデータを抽出します。
構文
JSON_PATH(path, JSON)
引数
| 名前 | 型 | 説明 | 既定値 |
|---|---|---|---|
| path | string | JSON パス式 | |
| JSON | string | JSON ドキュメントを含む文字列 |
例
| path | JSON | 出力 |
|---|---|---|
| "$[*].author.name" | "[{ | |
name: The Great Gatsby, |
||
author: { |
||
name: F. Scott Fitzgerald |
||
| } | ||
| }, | ||
| { | ||
name: Nineteen Eighty-Four, |
||
author: { |
||
name: George Orwell |
||
| } | ||
| }]" | [F. Scott Fitzgerald, George Orwell] |
|
| "net_id" | "{ net_id: 41 }" |
41
|
| "net_id" | "{ net_id: [41, 42] }" |
[41,42]
|
| "net_id[*]" | "{ net_id: [41, 42] }" |
[41, 42] |
| "net_id.parent" | "{ net_id: [41, 42] }" |
null |
| "$[*]" | "[1,2,3]" | [1, 2, 3] |
| "$[*].author" | "[{ | |
name: The Great Gatsby, |
||
author: { |
||
name: F. Scott Fitzgerald |
||
| } | ||
| }, | ||
| { | ||
name: Nineteen Eighty-Four, |
||
author: { |
||
name: George Orwell |
||
| } | ||
| }]" | [{"name":"F. Scott Fitzgerald"}, {"name":"George Orwell"}] |