How to create a Sphinx index (utf8 cirillic json_encoded string)?

Question

Sphinx

Good afternoon uv. community.
Help solve the issue.
There is data in the database from the previous developer.
They are stored, oddly enough, in the json_encode line.
The main problem with Cyrillic UTF8 which looks like this in the database is \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u044b\u043c
How can one build an index for the sphinx using such data?

Answer 1

The easiest way is to add another column with the data you need.

Answer 2

There was an idea!
Form the index yourself, with a self-written indexer, first converting the data into the desired format.

Answer 3

If anyone is interested, I'll post the details later.