| Bug #66967 | Index is not used for MyISAM table with SELECT+GROUP BY | ||
|---|---|---|---|
| Submitted: | 26 Sep 2012 8:17 | Modified: | 27 Sep 2012 11:37 |
| Reporter: | Nilnandan Joshi | Email Updates: | |
| Status: | Duplicate | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S2 (Serious) |
| Version: | 5.5.27 | OS: | Linux |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | MySQL 5.5.27 | ||
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
[26 Sep 2012 8:20]
Nilnandan Joshi
[26 Sep 2012 8:21]
Nilnandan Joshi
mysqlslap output for timings of select query (with and without force index)
Attachment: mysqlslap_output (application/octet-stream, text), 1.22 KiB.
