| Bug #54481 | GROUP BY loses effect with JOIN + ORDER BY + LIMIT and join caching | ||
|---|---|---|---|
| Submitted: | 14 Jun 2010 11:10 | Modified: | 15 Oct 2012 13:43 |
| Reporter: | John Embretsen | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S2 (Serious) |
| Version: | 5.1-bzr, 5.6.99-m4, mysql-next-mr-opt-backporting | OS: | Any |
| Assigned to: | Guilhem Bichot | CPU Architecture: | Any |
| Tags: | join_cache_level, optimizer_switch | ||
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
