sp_show_statistics_steps (SQL Server Compact Edition)

The stored procedure sp_show_statistics_steps returns a histogram representing the current distribution statistics for the specified index in the specified table.

Syntax

sp_show_statistics_steps 'table_name' , 'index_name'

Arguments

  • table_name
    The name of the table that contains the index.
  • index_name
    The name of the index on which you want statistics.

Result Set

The following table describes the columns returned in the result set.

Column Name Description

RANGE_HI_KEY

The upper bound value of the histogram step.

RANGE_ROWS

The number of rows from the sample that fall within each histogram step, excluding the upper bound.

EQ_ROWS

The number of rows from the sample that are equal in value to the upper bound of the histogram step.

DISTINCT_RANGE_ROWS

The number of distinct values within a histogram step, excluding the upper bound.

Remarks

The results returned indicate the selectivity of an index. A lower density indicates greater selectivity. The results provide the basis for determining whether an index is useful to the query optimizer.

Example

The following example displays statistics information for the AK_Product_Nameindex of the Addresstable.

sp_show_statistics_steps 'Address', 'AK_Product_Name'

See Also

Reference

sp_show_statistics (SQL Server Compact Edition)
sp_show_statistics_columns (SQL Server Compact Edition)

Other Resources

Enhancing Performance (SQL Server Compact Edition)

Help and Information

Getting SQL Server Compact Edition Assistance