Wrong Cardinality Estimation for NULL Columns When Using an NVL Function
(Doc ID 2227194.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 and later
Information in this document applies to any platform.
- The cardinality estimation is wrong for a query where a join of null columns with NVL function is used in a query
- The cardinality reported is 1 (E-rows) but the actual (A-rows) returns 1000
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