Mysqlerror1452-Cannotaddorupdateachildrow:aforeignkeyconstra

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Mysqlerror1452-Cannotaddorupdateachildrow:aforeignkeyconstra_MySQL

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Jun 01, 2016 pm 01:17 PM

mysql

今天在使用load data 将txt文件中的数据导入mysql中的时候，发现了这个错误，产生的原因是外键中的值，在关联的表中并不存在。

load data local infile "E:/javaTest/sql.txt"into table questionFIELDS TERMINATED by &#39;,&#39; (user_id,point,status,title,content,sub_type_id,delete_flg,entry_date_time,reply_date_time);

使用load data 命令的时候，我将逗号作为了分隔符，所以出现了问题，因为有一个字段是String类型的，里面可能会包含逗号，所以分割这块出现了问题。

解决办法也很简单，找到出问题的那个外键，把值修改一下就可以了。

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