Bug #49111 Change in execution plan for count_distinct_group_on_key causes peformance drop
Submitted: 25 Nov 2009 20:11 Modified: 30 Aug 2012 14:32
Reporter: Alexey Stroganov Email Updates:
Status: Closed Impact on me:
None 
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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