Reports information about the internal row fragmentation for a table at the FP index level.
User must be a table owner or have the MONITOR, MANAGE ANY DBSPACE, CREATE ANY INDEX, ALTER ANY INDEX, CREATE ANY OBJECT, or ALTER ANY OBJECT system privilege. Users without one of these system privileges must be granted EXECUTE permission to run the stored procedure.
Parameter |
Description |
|---|---|
table-name |
Target table table-name reports on all columns in the named table. |
column-name |
Target column column-name reports on the named column in the target table. You may specify multiple target columns, but must repeat the keyword each time. |
You must specify the keywords table and column. These keywords are not case-sensitive.
sp_iqrowdensity measures row fragmentation at the default index level. Density is the ratio of the minimum number of pages required by an index for existing table rows to the number of pages actually used by the index. This procedure returns density as a number such that 0 < density < 1. For example, if an index that requires 8 pages minimum storage occupies 10 pages, its density is .8.
The density reported does not indicate the number of disk pages that may be reclaimed by re-creating or reorganizing the default index.
This procedure displays information about the row density of a column, but does not recommend further action. You must determine whether or not to re-create, reorganize, or rebuild an index.