| Bug #45828 | Optimizer won't use partial primary key if another index can prevent filesort | ||
|---|---|---|---|
| Submitted: | 29 Jun 2009 15:55 | Modified: | 6 Aug 2009 15:01 |
| Reporter: | Harrison Fisk | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 5.1.35, 5.1.37-bzr, 5.4.0 | OS: | Any |
| Assigned to: | Georgi Kodinov | CPU Architecture: | Any |
| Tags: | innodb, Optimizer, order by, primary key, regression | ||
If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.
To split a large file:
- On *nix platforms use the split command e.g.
split -b 50MB <my_large_archive> <my_split_archive_prefix> - On windows use WinZip or a similar utility to split the large file
