Question

I have a data base with a column named “URL” I want to change all the rows from http://site.com to http://www.site.com. I just want to remove the http:// and replace with www. in every row. Is that possible via a query or do i need to manually change them all?

Answer 1

You don’t specify the DBMS you’re using, but I would think this sort of solution would work – most anything should have equivalent functions/operators (the below is Oracle SQL):

UPDATE table_name
   SET url = CONCAT( 'www.', SUBSTR(url, 8, LENGTH(url) - 7) )
 WHERE url LIKE 'http://%'