magento upgrad from 1.4.0.1 to 1.4.2.0

问题:

I am getting this error: Integrity constraint violation: 1062 Duplicate entry '7' for key 'PRIMARY' when upgrading magento.

Any idea how to fix it?

回答1:

Here is complete solution to upgrade from any version because I tried step by step version upgrade of mageto but I faced the same problems.

Magento upgrade takes too long and never completes