-On schema updates, index changes are not as efficent as they could be,
-especially with large data sets. Specifically, we don't currently recognize
-existing indices with different/"wrong" names that we could use "ALTER INDEX
-name RENAME TO new_name" on, and instead drop the "wrongly named" index and
-re-build a new one. Since these are indices and not columns, its not a huge
-deal, everything turns out right in the end, though inefficient.
-