| Bug #87947 | Optimizer chooses ref over range when access when range access is faster | ||
|---|---|---|---|
| Submitted: | 3 Oct 2017 4:00 | Modified: | 9 Oct 2017 5:36 |
| Reporter: | Jaime Sicam | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 5.7.19 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
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
[3 Oct 2017 4:02]
Jaime Sicam
[8 Oct 2017 5:22]
Jaime Sicam
New test data for t2
Attachment: t2-1.sql (application/octet-stream, text), 1.06 KiB.
[9 Oct 2017 5:42]
Umesh Shastry
test results - 5.7.19
Attachment: 87947_5.7.19.results (application/octet-stream, text), 11.08 KiB.
