mysql - 执行sql文件时忽略mysql错误信息

Question

我正在将记录从一个表复制到另一个表，并且某些记录可能已经在我要将记录复制到的第二个表中。

因为我正在复制很多行，所以我正在寻找一种方法来忽略来自 mysql 的所有记录已经存在的消息并继续执行 mysql 文件。

有什么方法可以抑制错误消息吗？

Answer 1

根据 INSERT Syntax 记录:

The INSERT statement supports the following modifiers:

[ deletia ]

• If you use the IGNORE keyword, errors that occur while executing the INSERT statement are treated as warnings instead. For example, without IGNORE, a row that duplicates an existing UNIQUE index or PRIMARY KEY value in the table causes a duplicate-key error and the statement is aborted. With IGNORE, the row still is not inserted, but no error is issued.