[Mediawiki-l] Fixing external links across a wiki

[Michelle]

A site that we link to from our wiki has been redesigned, so that all of our
links to it are broken. I see how to search for the articles using the links
using Special:LinkSearch. Is there a way to replace an external link string
throughout a wiki?  I would do it with and SQL query, but that data seems to
be stored in blobs. I have no idea how to change blob contents, nor would I
want to risk it!

Thanks,
Michelle