| Bug #89149 | SELECT DISTINCT on multiple TEXT columns is slow | ||
|---|---|---|---|
| Submitted: | 8 Jan 2018 23:41 | Modified: | 16 Jan 2018 17:07 |
| Reporter: | Leif Neve | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 5.7.20 | OS: | Red Hat (7.4) |
| Assigned to: | CPU Architecture: | Any | |
| Tags: | 5.5, 5.7, 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
[8 Jan 2018 23:49]
Leif Neve
