| Bug #54518 | Very bad performance with subselect | ||
|---|---|---|---|
| Submitted: | 15 Jun 2010 14:25 | Modified: | 15 Oct 2012 13:31 |
| Reporter: | Christoph Moser | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server | Severity: | S5 (Performance) |
| Version: | 5.0.22 | OS: | Windows (Vista) |
| Assigned to: | Roy Lyseng | CPU Architecture: | Any |
| Tags: | semijoin, subselect | ||
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
