请帮我优化这段sql，SELECT b.alert_description AS `key`,COUNT(a.alert_id) AS `value` FROM r_robot_alert a LEFT JOIN dim_alert_code b ON b.alert_type = a.alert_type WHERE a.customer_name LIKE '%%江西省肿瘤医院%%' AND dt BETWEEN '2022-10-16' AND '2022-12-16' AND alert_level = 'Error' GROUP BY alert_description

这是您的 SQL 语句的优化版本：

SELECT b.alert_description AS `key`, COUNT(a.alert_id) AS `value`
FROM r_robot_alert a
LEFT JOIN dim_alert_code b ON b.alert_type = a.alert_type
WHERE a.customer_name LIKE '%%u6c5fu897fu7701u80bfu7624u533bu9662%%'
  AND dt BETWEEN '2022-10-16' AND '2022-12-16'
  AND alert_level = 'Error'
GROUP BY b.alert_description

注意：

- WHERE 子句中的 `a.customer_name` 和 `alert_level` 应该用单引号引用字符串值。
- BETWEEN 子句中的日期应该用单引号引用。

希望这可以帮到您！