Update replace a part of the string in one column with part of a string from another column

Question

Please help me with this query. I am trying to replace a part of the string in one column with part of a string from another column the table should look like

image_url                                 |          video_url
----------------------------------------------------------------------------------------------
https://siteurl/folder/folder/folder/     |          https://siteurl/folder/folder/folder/
folder/folder/folder/xyz.jpg              |           folder/folder/folder/folder/xyz.mp4 

I am trying to update the folder path of the video_url with the one from the image url.The folders manes are all completely different on different rows I have tried the below but this throws an error

UPDATE `tbl` 
set video_url = REPLACE(video_url,
                        SELECT SUBSTRING_INDEX(video_url, "/", 10), 
                        SELECT SUBSTRING_INDEX(image_url, "/", 9)) 
where image_url like '%ch1%'

I anyone can provide a solution it would be great help

Answer 1

Not sure if it is what you want but try this:

UPDATE Table
SET video_url = 
CONCAT(
   LEFT(image_url, LENGTH(image_url) - LOCATE('/', REVERSE(image_url))), 
   '/', 
   SUBSTRING_INDEX(video_url, '/', -1)
);

This will replace the folders path on video_url column with the folders path from image_url column.