Bug #49111 | Change in execution plan for count_distinct_group_on_key causes peformance drop | ||
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Submitted: | 25 Nov 2009 20:11 | Modified: | 30 Aug 2012 14:32 |
Reporter: | Alexey Stroganov | Email Updates: | |
Status: | Closed | Impact on me: | |
Category: | MySQL Server: Optimizer | Severity: | S3 (Non-critical) |
Version: | 5.5.0-beta, 5.1 | OS: | Any |
Assigned to: | CPU Architecture: | Any | |
Tags: | cost model, regression |
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