{
  "id": "python/sqlalchemy-unsupported-dialect",
  "signature": "sqlalchemy.exc.NoSuchModuleError: Can't load plugin: sqlalchemy.dialects:mysql2",
  "signature_zh": "SQLAlchemy 无此模块错误：无法加载插件：sqlalchemy.dialects:mysql2。",
  "regex": "sqlalchemy\\.exc\\.NoSuchModuleError:\\ Can't\\ load\\ plugin:\\ sqlalchemy\\.dialects:mysql2",
  "domain": "python",
  "category": "module_error",
  "subcategory": null,
  "root_cause": "指定的数据库方言不存在或拼写错误。",
  "root_cause_type": "generic",
  "root_cause_zh": "指定的数据库方言不存在或拼写错误。",
  "versions": [
    {
      "version": "1.4.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "2.0.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "尝试安装 mysql2 包，但该包不存在。",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "忽略错误，但无法连接到数据库。",
      "fail_rate": 1.0,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "检查方言名称，正确的 MySQL 方言是 'mysql'，例如：mysql+pymysql://",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.9,
      "how": "确保安装对应的驱动，如 PyMySQL 或 mysqlclient。",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2025-08-12",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}