| Bug #45373 | INDEX FOR GROUP BY is not used if there is a LIMIT clause in the query | ||
|---|---|---|---|
| Submitted: | 8 Jun 2009 13:14 | Modified: | 19 Jun 2009 4:19 |
| Reporter: | Alex Bolenok | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S3 (Non-critical) |
| Version: | 5.1.35-community, 5.1.36-bzr | OS: | Any |
| Assigned to: | Assigned Account | CPU Architecture: | Any |
| Tags: | cost model, GROUP BY, INDEX, limit | ||
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
