Bug #32665 | Query with dependent subquery is too slow | ||
---|---|---|---|
Submitted: | 23 Nov 2007 16:26 | Modified: | 23 Nov 2010 3:32 |
Reporter: | adrian drumea | Email Updates: | |
Status: | Closed | Impact on me: | |
Category: | MySQL Server: Optimizer | Severity: | S3 (Non-critical) |
Version: | 5.1.22-rc-Debian_1-log | OS: | Any |
Assigned to: | Sergey Petrunya | CPU Architecture: | Any |
Tags: | dependent subquery, IN, slow, subquery benchmark |
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