Bug #50367 | REPLACE has quadradic computational complexity on windows server (but not linux) | ||
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Submitted: | 15 Jan 2010 14:12 | Modified: | 18 Mar 2010 10:15 |
Reporter: | Morten Kloster | Email Updates: | |
Status: | Verified | Impact on me: | |
Category: | MySQL Server: General | Severity: | S5 (Performance) |
Version: | 5.1.42, 5.1 bzr | OS: | Any (MS Windows 32 bits, Mac) |
Assigned to: | CPU Architecture: | Any | |
Tags: | performance, REPLACE, windows |
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
[15 Jan 2010 14:25]
Morten Kloster