3回答

• 

  一念清风

  2020-03-19 03:47:50

  在销量增加中犯了同样的错误，一开始就认为是sql语句错了，结果就是这个逗号被直接忽略，在service层浪费了两个半钟。。。感谢啊，要是没你的提示还不知道要搞多久。

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• 

  萧阳_0

  2019-03-25 11:27:52

  解决了，原来是没有删除

  set stock = stock - #{amount}，

  这的逗号
  

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• 

  萧阳_0

  2019-03-25 11:19:03

  ### Error updating database.  Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where item_id = 5 and stock >= 1' at line 3

  ### The error may involve defaultParameterMap

  ### The error occurred while setting parameters

  ### SQL: update item_stock     set stock = stock - 1,     where item_id = 5 and stock >= 1

  ### Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where item_id = 5 and stock >= 1' at line 3

  ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'where item_id = 5 and stock >= 1' at line 3]

  
  

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