| Bug #115122 | Unneeded full table scan, although there is an index and condition | ||
|---|---|---|---|
| Submitted: | 25 May 2024 11:17 | Modified: | 16 Jun 2024 9:10 |
| Reporter: | Ahmed Wahba | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 8.4 (Latest), 8.0.37 | OS: | Ubuntu (22.04 LTS) |
| Assigned to: | CPU Architecture: | ARM | |
| Tags: | nested query, performance, regression | ||
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
[25 May 2024 11:22]
Ahmed Wahba
[25 May 2024 11:24]
Ahmed Wahba
Python script to fill the tables with 5M rows (takes time)
Attachment: generator.py (text/x-python), 3.02 KiB.
[25 May 2024 11:48]
Ahmed Wahba
test_db part 1
Attachment: backup.sql.zstaa (application/octet-stream, text), 47.68 MiB.
[25 May 2024 11:51]
Ahmed Wahba
test_db part 2
Attachment: backup.sql.zstab (application/octet-stream, text), 43.52 MiB.
