| Bug #121141 | group skip scan for deduplication collapses each group to one row before a semijoin/antijoin condition on a later index | ||
|---|---|---|---|
| Submitted: | 20 Aug 1:50 | Modified: | 20 Aug 5:26 |
| Reporter: | Blackening Zhang | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S1 (Critical) |
| Version: | 8.0.46, 8.4.11, 9.7.2 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | antijoin, group skip scan, index skip scan for deduplication, Optimizer, regression, semijoin, wrong results | ||
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
