| Bug #45424 | UPDATE statement cause full table scan ? | ||
|---|---|---|---|
| Submitted: | 10 Jun 2009 6:58 | Modified: | 10 Jun 2009 7:59 |
| Reporter: | Lance Li | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S2 (Serious) |
| Version: | 5.0.51a, 5.0.77 and 5.1.34, 5.1, 6.0 bzr | OS: | Linux |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | full table scan, performance, regression, UPDATE | ||
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
[10 Jun 2009 8:02]
Sveta Smirnova
