| Bug #78997 | optimizer prefers using index `a` to ORDER instead of `b,a` to EQ and ORDER | ||
|---|---|---|---|
| Submitted: | 28 Oct 2015 9:53 | Modified: | 5 Dec 2015 7:31 |
| Reporter: | Kenny Gryp | Email Updates: | |
| Status: | No Feedback | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S3 (Non-critical) |
| Version: | 5.6.27, 5.7.9 | OS: | Any |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | Optimizer | ||
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
[28 Oct 2015 9:53]
Kenny Gryp
[28 Oct 2015 9:54]
Kenny Gryp
optimizer_trace.orig.txt
Attachment: optimizer_trace.orig.txt (text/plain), 19.80 KiB.
[30 Oct 2015 17:29]
Kenny Gryp
optimizer_trace.orig.579.txt
Attachment: optimizer_trace.orig.579.txt (text/plain), 18.26 KiB.
