| Bug #119442 | Optimizer fails to simplify ORDER BY when column is filtered by IS NULL, causing filesort | ||
|---|---|---|---|
| Submitted: | 21 Nov 20:13 | Modified: | 27 Nov 4:52 |
| Reporter: | Kishore Kumar (OCA) | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 8.4.4 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | filesort, INDEX, IS NULL, Optimizer, order by | ||
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
