| Bug #71140 | Optimizer does NOT use range checks in typical self-join for InnoDB tables | ||
|---|---|---|---|
| Submitted: | 13 Dec 2013 9:16 | Modified: | 31 Jul 2015 8:59 |
| Reporter: | Valeriy Kravchuk | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S2 (Serious) |
| Version: | 5.1, 5.5, 5.6.15, 5.7.7 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | performance, range check, self-join | ||
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
