mysql - 休眠，mysql

Question

我有以下 hql 查询：

UPDATE TaskAssessment taskAssessment 
SET taskAssessment.activeFlag = false 
WHERE taskAssessment IN 
(
SELECT taskAssessment2 
FROM TaskAssessment taskAssessment2 
Where taskAssessment2.activeFlag = true 
AND taskAssessment2.patient.id 
AND taskAssessment2.needsLevel.careNeed = :careNeed
)

但它给了我错误：

You can't specify target table 'TASK_ASSESSMENT' for update in FROM clause

谁能帮我更正mysql和hibernate的查询。提前致谢。

Answer 1

要解决You can't specify target table 'TASK_ASSESSMENT' for update in FROM clause，请重写查询以使用JOIN而不是IN（在 mysql 中您需要编写类似这样的内容）：

UPDATE TaskAssessment a
INNER JOIN TaskAssessment a2 ON (a2.id = a.id)
SET a.activeFlag = 0  
WHERE a2.active_flag = 1 AND 
a2.patient_id = :patient_id AND a2.needsLevel_careNeed = :careNeed