Search & replace 'http' to 'https' in database

Question

Using phpmyadmin, I want to run a query that will search my entire database for:

http://example.com

And replace with:

Answer 1

use REPLACE. and if there is a index on the field then the UPDATE can use them

UPDATE t
     set url = REPLACE(url, 'http:', 'https:')
     WHERE url LIKE '%http:%';

only change example.com

this will only find row with 'http://example.com'

UPDATE t
     set url = REPLACE(url, 'http:', 'https:')
     WHERE url LIKE '%http://example.com%';

or this will find all rows with http:// but only change only this http://example.com to https://example.com

UPDATE t
     set url = REPLACE(url, 'http://example.com', 'https://example.com')
     WHERE url LIKE '%http:%';