Create an index only on certain rows in mysql
- by dhruvbird
So, I have this funny requirement of creating an index on a table only on a certain set of rows.
This is what my table looks like:
USER: userid, friendid, created, blah0, blah1, ..., blahN
Now, I'd like to create an index on:
(userid, friendid, created)
but only on those rows where userid = friendid. The reason being that this index is…
