medium10 pts · first answer countsindexing
ORDER BY with mixed directions
A leaderboard runs ORDER BY score DESC, joined_at ASC LIMIT 50. Which index lets the database read rows in that order without a sort?
Discussion 0
Join free to post in the discussion.
Related questions
- When a B-tree index helpsDatabase Administrator
- Index on a yes/no columnDatabase Administrator
- How InnoDB stores table rowsDatabase Administrator
- What an InnoDB secondary index points toDatabase Administrator
- LIKE with a leading %Database Administrator
- What a hash index supportsDatabase Administrator
- Cost of extra indexes on insertsDatabase Administrator
- EXPLAIN versus EXPLAIN ANALYZEDatabase Administrator