| Bug #120868 | Optimizer misses ORDER BY LIMIT optimization when ordering key is equivalent through join equality | ||
|---|---|---|---|
| Submitted: | 5 Jul 8:42 | Modified: | 6 Jul 5:29 |
| Reporter: | Zack Morgan | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 9.7.1 | OS: | Linux (22.04.4 LTS) |
| Assigned to: | CPU Architecture: | x86 (x86_64, Intel(R) Xeon(R) Gold 5220) | |
| Tags: | join-order, limit, Optimizer, order-by, performance | ||
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
[5 Jul 8:46]
Zack Morgan
