private bool Migrate_30 ()
{
Execute ("DROP INDEX IF EXISTS CoreAlbumsIndex");
Execute ("DROP INDEX IF EXISTS CoreAlbumsArtistIndex");
Execute ("DROP INDEX IF EXISTS CoreArtistsIndex");
Execute ("CREATE INDEX CoreAlbumsIndex ON CoreAlbums(ArtistID, TitleSortKey)");
Execute ("CREATE INDEX CoreAlbumsArtistIndex ON CoreAlbums(TitleSortKey, ArtistNameSortKey)");
Execute ("CREATE INDEX CoreArtistsIndex ON CoreArtists(NameSortKey)");
Execute ("ANALYZE");
return true;
}