In MySQL trigger to update parent record in the same table?

This:
Table comments with fields id, parent_id and child_count.

Task:
After you add a child to increment the value of child_count parent.

Since the update the same table in the trigger are prohibited, you may receive the following error:
Can't update table in stored function/trigger because it is already used by statement which invoked this stored function/trigger

What are the solutions (or workaround) this problem?
April 4th 20 at 13:18
2 answers
April 4th 20 at 13:20
To abandon the trigger, in a single transaction to do two requests to add a review and increase of the counter of the parent.
April 4th 20 at 13:22
Well, if in the forehead, it seems like this option.
Create a table with one field comments_buffer comments_id and add in the trigger line that writes to this table the row id in which you want to increment the child_count field.
And on the table comments_buffer hang a trigger on update, which will update the comments table (child_count = child_count + 1) .

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