高级功能

[
  {
    "user": {
      "personal": {
        "name": "John Doe",
        "age": 30
      },
      "contact": {
        "email": "john@example.com",
        "phone": "123-456-7890"
      }
    },
    "orders": [
      { "id": 1, "amount": 99.99 },
      { "id": 2, "amount": 149.99 }
    ]
  }
]

user.personal.name,user.personal.age,user.contact.email,user.contact.phone,orders
John Doe,30,john@example.com,123-456-7890,"[{""id"":1,""amount"":99.99},{""id"":2,""amount"":149.99}]"

[
  {
    "name": "Product A",
    "tags": ["electronics", "gadget", "portable"],
    "specifications": {
      "weight": "500g",
      "dimensions": [10, 20, 30]
    }
  }
]

name,tags,specifications.weight,specifications.dimensions
Product A,"[""electronics"",""gadget"",""portable""]",500g,"[10,20,30]"

name,description
Café,Espresso with café au lait
北京,Capital of China

name,description
"Smith, John","He said ""Hello World"" to everyone"

name,description
Smith John,He said Hello World to everyone

[
  { "id": 1, "name": "Product A", "price": 99.99, "active": true, "tags": null },
  { "id": 2, "name": "Product B", "price": 149.99, "active": false, "tags": "electronics" }
]

id,name,price,active,tags
1,Product A,99.99,true,
2,Product B,149.99,false,electronics

// Fetch data from API
fetch("/api/users")
  .then((response) => response.json())
  .then((data) => {
    // Use the converter tool to transform to CSV
    const csvData = convertToCSV(data);
    downloadCSV(csvData, "users.csv");
  });

-- SQL query result as JSON
SELECT json_agg(row_to_json(t)) FROM (
  SELECT name, email, created_at FROM users
) t;