表被指定两次，既作为“UPDATE”的目标，又作为 mysql 中数据的单独源

我在 mysql 中有以下查询，我想检查是否分行编号 and year of finance输入来自分支主控等于分行编号 and year of manager然后更新状态manager表反对分行编号 in manager

UPDATE manager as m1 
  SET m1.status = 'Y'
  WHERE m1.branch_id IN (
    SELECT m2.branch_id FROM manager as m2 
     WHERE (m2.branch_id,m2.year) IN (
        (
          SELECT DISTINCT branch_id,year 
            FROM `branch_master` 
           WHERE type = 'finance'
        )
     )
  )

但出现错误

表“m1”被指定两次，既作为“UPDATE”的目标又作为 单独的数据源

这是典型的 MySQL 事情，通常可以通过从派生表中进行选择来规避，即代替

FROM manager AS m2

use

FROM (select * from manager) AS m2

完整的声明：

UPDATE manager
SET status = 'Y'
WHERE branch_id IN
(
  select branch_id
  FROM (select * from manager) AS m2
  WHERE (branch_id, year) IN
  (
    SELECT branch_id, year
    FROM branch_master
    WHERE type = 'finance'
  )
);