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v$sql_cs_selectivity - range in table always higher than one

edited Aug 9, 2016 2:56PM in SQL Performance (MOSC) 4 commentsAnswered

how can v$sql_cs_selectivity range (low to high) be higher than one when all articles/resources clearly mention that selectivity is between 0 and 1?

I've noticed all examples about v$sql_cs_selectivity range (low) and (high), where (high) is always larger than one. I have found this for most books I skimmed through and also oracle.com website: Oracle Database 11g: The Top New Features for DBAs and Developers | Adaptive Cursors and SQL Plan Management

They all talk about how selectivity must be between 0 and 1 yet give example of v$sql_cs_selectivity higher than one when trying to explain adaptive cursor management.

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