1093 - You can't specify target table 'account' for update in FROM clause

時間 2019-11-06

標籤 can't specify target table account update clause 简体版

原文原文鏈接

目的：查詢一張表的相同的兩條數據，並刪除一條數據。3d

分析先查詢出相同的數據，而後刪除blog

查詢相同的數據 ci

SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1；get

DELETE FROM account WHERE id = (SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1) ；table

1093 - You can't specify target table 'account' for update in FROM clausedate

不能爲FROM子句中的更新指定目標表'account'。im

修改後：數據

DELETE FROM account WHERE id = 查詢

(SELECT t.id from img

(SELECT a.id FROM account a GROUP BY a.username HAVING COUNT(a.username)>1) t)；

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