Skip to content Skip to sidebar Skip to footer
Showing posts with the label Cardinality
Sql Server 2005 Indexes And Low Cardinality

Sql Server 2005 Indexes And Low Cardinality

Post a Comment
How does SQL Server determine whether a table column has low cardinality? The reason I ask is becau… Read more Sql Server 2005 Indexes And Low Cardinality
Index On Mysql Column Has Lower Cardinality Than Count Distinct?

Index On Mysql Column Has Lower Cardinality Than Count Distinct?

Post a Comment
I have a varchar(50) field named token. When I do count(distinct token) from table I get ~ 400k.… Read more Index On Mysql Column Has Lower Cardinality Than Count Distinct?