This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.
The StatisticsIndex property directs Index object property evaluation when the object is used to create a Microsoft SQL Server index.
SQL Server query optimization relies, in part, on data distribution statistics maintained on indexes. To aid query optimization, SQL Server can generate data distribution statistics for one or more columns in a table without imposing overhead associated with index maintenance. SQL Distributed Management Objects (SQL-DMO) implements data distribution statistics creation using the Index object and the StatisticsIndex property.