| Bug #24770 | update with subquery slow | ||
|---|---|---|---|
| Submitted: | 2 Dec 2006 0:37 | Modified: | 21 Mar 2011 4:21 |
| Reporter: | Roberto Spadim (Basic Quality Contributor) | Email Updates: | |
| Status: | In progress | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 5.1 | OS: | Any (all) |
| Assigned to: | Roy Lyseng | CPU Architecture: | Any |
| Tags: | qc, semijoin, update subquery | ||
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
