| Bug #64557 | Correlated subquery performance is degraded in releases alfter 5.0 | ||
|---|---|---|---|
| Submitted: | 6 Mar 2012 0:12 | Modified: | 8 Oct 2012 18:33 |
| Reporter: | David Berg | Email Updates: | |
| Status: | Closed | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S2 (Serious) |
| Version: | 5.1.56, 5.5.20, 5.6.4 | OS: | Windows (XP Pro SP3) |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | correlated, Optimizer, performance, regression, 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
