MySQL：错误 1217 (23000)：无法删除或更新父行：外键约束失败 - 但仅适用于 1 个 sql 文件

Question

I'm trying to import data from sql files into local MySQL database. I'm using WampServer2.5, MySQL 5.6.17. I'm importing them using MySQL console as PHPMyAdmin interface was causing some problems.

First two files seem to be uploaded correctly. However, they were much smaller than the third one. The steps are always the same:

1. create database xyz;
2. use database xyz;
3. SET FOREIGN_KEY_CHECKS = 0;
4. source path/to/the/xyz.sql

When uploading the third file at some point I get this errors (a couple in a row, then it keeps uploading):

ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:  [some number]
Current database: xyz

Then a get a few of those, which is strange as I set that in the beginning (maybe there is some reset of this setting when connection is lost?):

ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails

The result is I have all the tables uploaded, but some of them have no data - mostly because they are referencing user table from that third database, which has no records.

Ideas / questions:

1. I tried to edit php.ini file to increase memory limit, max file upload size but there is no effect on PHPMyAdmin interface
2. Can I find only one table in sql file and upload the records to the table in my MYSQL database?

Answer 1

在我打开完整的 sql 文件 i Notepad++ 后，该表已更新，仅发现在该特定表中插入值的行，将其保存为新的 sql 文件，然后使用“源”命令。