| Bug #120793 | Default heuristic pruning misses join-connected prefix in 3-table query, causing ~40x slower plan | ||
|---|---|---|---|
| Submitted: | 27 Jun 11:52 | Modified: | 8 Jul 9:30 |
| Reporter: | Zack Morgan | Email Updates: | |
| Status: | Verified | Impact on me: | |
| Category: | MySQL Server: Optimizer | Severity: | S5 (Performance) |
| Version: | 9.7.1 | OS: | Ubuntu (22.04.4 LTS) |
| Assigned to: | CPU Architecture: | x86 (Intel(R) Xeon(R) Gold 5220 CPU @ 2.20GHz) | |
| Tags: | heuristic-pruning, join-order, natural-join, Optimizer, optimizer-prune-level, performance | ||
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