Contains one row per column that is part of a sys.indexes index or unordered table (heap).
ID of the object the index is defined on.
ID of the index in which the column is defined.
ID of the index column. index_column_id is unique only within index_id.
ID of the column in object_id.
0 = Row Identifier (RID) in a nonclustered index.
column_id is unique only within object_id.
Ordinal (1-based) within set of key-columns.
0 = Not a key column, or is an XML index or spatial index.
An XML or spatial index cannot be a key because the underlying columns are not comparable, meaning that their values cannot be ordered.
Ordinal (1-based) within set of partitioning columns.
0 = Not a partitioning column.
1 = Index key column has a descending sort direction.
0 = Index key column has an ascending sort direction.
1 = Column is a nonkey column added to the index by using the CREATE INDEX INCLUDE clause.
0 = Column is not an included column.
In SQL Server 2005 and later versions, the visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.