The system table OPTIMIZERINFORMATION contains the information about value distributions that is determined by the UPDATE STATISTICS statement, and used by the SQL optimizer.
OPTIMIZERINFORMATION
CHAR(32) |
Owner of the table |
|
TABLENAME |
CHAR(32) |
Name of the table |
COLUMNNAME |
CHAR(32) |
Name of a single non-inverted column |
INDEXNAME |
CHAR(32) |
Name of the index |
DISTINCTVALUECOUNT |
FIXED(10) |
Number of distinct values in the column, index, or primary key |
CALCULATEDSIZE |
FIXED(10) |
Memory requirements of the (primary key) index calculated by the last UPDATE STATISTICS (KB) |