SQL からの HTTP リクエストの送信

# Pull rows from MySQL
rows = db.query("SELECT id, tracking_number FROM shipments WHERE status IS NULL")

# Call a shipping API for each row
for row in rows:
    resp = requests.get(f"https://api.shipping.com/track/{row['tracking_number']}")
    status = resp.json()["status"]
    db.execute("UPDATE shipments SET status = ? WHERE id = ?", status, row["id"])

INSTALL EXTENSION vsql_http;

SET @resp = CONVERT(
  vsql_http.http_get('https://httpbin.org/get') USING utf8mb4
);

SELECT
  JSON_VALUE(@resp, '$.status')       AS status,
  JSON_VALUE(@resp, '$.content_type') AS content_type,
  JSON_UNQUOTE(JSON_EXTRACT(@resp, '$.content')) AS body;

-- On 0.0.6 and earlier, this throws an error — JSON_VALUE rejects binary charset
-- ERROR 3144: Cannot create a JSON value from a string with CHARACTER SET 'binary'
SELECT JSON_VALUE(vsql_http.http_get('https://httpbin.org/get'), '$.status');

-- This works on every version
SELECT JSON_VALUE(
  CONVERT(vsql_http.http_get('https://httpbin.org/get') USING utf8mb4),
  '$.status'
);

SET @resp = CONVERT(
  vsql_http.http_post(
    'https://httpbin.org/post',
    'application/json',
    '{"name": "widget", "qty": 3}'
  ) USING utf8mb4
);

SELECT
  JSON_VALUE(@resp, '$.status') AS status,
  JSON_UNQUOTE(JSON_EXTRACT(@resp, '$.content')) AS body;

SET @resp = CONVERT(
  vsql_http.http_request(
    'GET',
    'https://api.example.com/secure',
    '{"Authorization": "Bearer mytoken", "Accept": "application/json"}',
    NULL,
    NULL,
    NULL
  ) USING utf8mb4
);

SELECT vsql_http.url_encode('hello world & more');
-- → hello%20world%20%26%20more

-- Build a URL with encoded parameters
SET @q = vsql_http.url_encode('SELECT * FROM users');
SET @url = CONCAT('https://api.example.com/search?q=', @q);
SET @resp = CONVERT(vsql_http.http_get(@url) USING utf8mb4);

-- Use JSON_UNQUOTE + JSON_EXTRACT for large content fields
SELECT JSON_UNQUOTE(JSON_EXTRACT(@resp, '$.content')) AS body;