How to find sub-string and replace it?

Question

I have the following rows:

Name               Url
name1              http://foo.com/this/that
name6              http://that.net/hello
name2              http://foo.com/hello/world
name3              http://foo.com/world/hello
name4              http://hello.com/this/that

I need to write a query that will change every foo.com to hello.com.

Any ideas?

Answer 1

UPDATE <table name> SET Url = REPLACE (Url, "foo.com" , "hello.com")