{
  "db_name": "PostgreSQL",
  "query": "\n            UPDATE notification_queue\n            SET status = 'processing', updated_at = NOW()\n            WHERE id IN (\n                SELECT id FROM notification_queue\n                WHERE status = 'pending'\n                  AND scheduled_for <= $1\n                  AND attempts < max_attempts\n                ORDER BY scheduled_for ASC\n                LIMIT $2\n                FOR UPDATE SKIP LOCKED\n            )\n            RETURNING\n                id, user_id,\n                channel as \"channel: NotificationChannel\",\n                notification_type as \"notification_type: super::types::NotificationType\",\n                status as \"status: NotificationStatus\",\n                recipient, subject, body, metadata,\n                attempts, max_attempts, last_error,\n                created_at, updated_at, scheduled_for, processed_at\n            ",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "id",
        "type_info": "Uuid"
      },
      {
        "ordinal": 1,
        "name": "user_id",
        "type_info": "Uuid"
      },
      {
        "ordinal": 2,
        "name": "channel: NotificationChannel",
        "type_info": {
          "Custom": {
            "name": "notification_channel",
            "kind": {
              "Enum": [
                "email",
                "discord",
                "telegram",
                "signal"
              ]
            }
          }
        }
      },
      {
        "ordinal": 3,
        "name": "notification_type: super::types::NotificationType",
        "type_info": {
          "Custom": {
            "name": "notification_type",
            "kind": {
              "Enum": [
                "welcome",
                "email_verification",
                "password_reset",
                "email_update",
                "account_deletion",
                "admin_email",
                "plc_operation",
                "two_factor_code"
              ]
            }
          }
        }
      },
      {
        "ordinal": 4,
        "name": "status: NotificationStatus",
        "type_info": {
          "Custom": {
            "name": "notification_status",
            "kind": {
              "Enum": [
                "pending",
                "processing",
                "sent",
                "failed"
              ]
            }
          }
        }
      },
      {
        "ordinal": 5,
        "name": "recipient",
        "type_info": "Text"
      },
      {
        "ordinal": 6,
        "name": "subject",
        "type_info": "Text"
      },
      {
        "ordinal": 7,
        "name": "body",
        "type_info": "Text"
      },
      {
        "ordinal": 8,
        "name": "metadata",
        "type_info": "Jsonb"
      },
      {
        "ordinal": 9,
        "name": "attempts",
        "type_info": "Int4"
      },
      {
        "ordinal": 10,
        "name": "max_attempts",
        "type_info": "Int4"
      },
      {
        "ordinal": 11,
        "name": "last_error",
        "type_info": "Text"
      },
      {
        "ordinal": 12,
        "name": "created_at",
        "type_info": "Timestamptz"
      },
      {
        "ordinal": 13,
        "name": "updated_at",
        "type_info": "Timestamptz"
      },
      {
        "ordinal": 14,
        "name": "scheduled_for",
        "type_info": "Timestamptz"
      },
      {
        "ordinal": 15,
        "name": "processed_at",
        "type_info": "Timestamptz"
      }
    ],
    "parameters": {
      "Left": [
        "Timestamptz",
        "Int8"
      ]
    },
    "nullable": [
      false,
      false,
      false,
      false,
      false,
      false,
      true,
      false,
      true,
      false,
      false,
      true,
      false,
      false,
      false,
      true
    ]
  },
  "hash": "cb6f48aaba124c79308d20e66c23adb44d1196296b7f93fad19b2d17548ed3de"
}