What to do if in a Nested Set table with 1000 entries, one entry was manually deleted from phpmyadmin?

Question

Yii

Good afternoon, the whole point is in the question, I use YII , before the tragedy I successfully increased my product tree, it has 5 levels. Accordingly, now the right and left keys do not match, what to do? parent_id is in live records.

Answer 1

1. backup
2. rebuild keys