Question

lets say this table

+--------------+---------------------------------+
| id           | path                            |
+--------------+---------------------------------+
| 1            | http://old.com/img/1.png        | 
| 2            | http://old.com/img/2.png        | 
| 3            | http://old.com/img/3.png        | 
| 4            | http://old.com/img/4.png        | 
| 5            | http://old.com/img/5.png        | 
| 6            | http://old.com/img/6.png        | 
+--------------+---------------------------------+

what sentence will update it to

+--------------+---------------------------------+
| id           | path                            |
+--------------+---------------------------------+
| 1            | http://new.com/img/1.png        | 
| 2            | http://new.com/img/2.png        | 
| 3            | http://new.com/img/3.png        | 
| 4            | http://new.com/img/4.png        | 
| 5            | http://new.com/img/5.png        | 
| 6            | http://new.com/img/6.png        | 
+--------------+---------------------------------+

i don’t know how to str_replace in mysql

"UPDATE table SET path = REPLACE(path, 'old.com', 'new.com')" ?? i can’t mess the database here..

Answer 1

update mytable set path = replace(path, 'old.com', 'new.com');

If you’re worried about the effect of an update (and you should be), I do this first:

select path, replace(path, 'old.com', 'new.com') as new_path
from mytable;

And I just eyeball the results to see if they “look OK”. If they do, if fire the update.