[SERVER-3700] Field included in covered index but not actually sorted on tree Created: 27/Aug/11 Updated: 29/Aug/11 Resolved: 27/Aug/11 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | New Feature | Priority: | Minor - P4 |
| Reporter: | Harry Mexxian | Assignee: | Unassigned |
| Resolution: | Won't Fix | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Participants: |
| Description |
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If you want to do a: find on A, return ABC using an index on ABC, there is no need for the server to bother sorting BC on insert/deletes this could provide quite a performance boost and could be an option when you run ensureindex ? |
| Comments |
| Comment by Harry Mexxian [ 27/Aug/11 ] |
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Fair enough. |
| Comment by Eliot Horowitz (Inactive) [ 27/Aug/11 ] |
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The performance difference is going to be very minimal relative to other aspects. |