Function isMetadataObject

src/utils/multi-statement-result-parser.ts:17–27

* Checks if an element is a metadata object from INSERT/UPDATE/DELETE operations * rather than a row array from SELECT queries. * * Different drivers use different property names for metadata: * - MariaDB: affectedRows, warningStatus, insertId * - MySQL2: affectedRows, insertId, fieldCount, Res

(element: any)

 * - MySQL2: affectedRows, insertId, fieldCount, ResultSetHeader type
 */
function isMetadataObject(element: any): boolean {
  if (!element || typeof element !== 'object' || Array.isArray(element)) {
    return false;
  }

  // Check for common metadata properties that indicate this is not a row array
  return 'affectedRows' in element ||
         'insertId' in element ||
         'fieldCount' in element ||
         'warningStatus' in element;
}

/**
 * Checks if results appear to be from a multi-statement query.