This topic describes the indexes advised system table.
| Column name | System column name | Data type | Description |
|---|---|---|---|
| TABLE_NAME | TBNAME | VARCHAR(258) | Table over which an index is advised |
| TABLE_SCHEMA | DBNAME | CHAR(10) | Schema containing the table |
| SYSTEM_TABLE_NAME | SYS_TNAME | CHAR(10) | System table name on which the index is advised |
| PARTITION_NAME | TBMEMBER | CHAR(10) | Partition detail for the index |
| KEY_COLUMNS_ADVISED | KEYSADV | VARCHAR(16000) | Column names for the advised index |
| LEADING_COLUMN_KEYS | LEADKEYS | VARCHAR(16000) | Leading, Order Independent keys. the keys at the beginning of the KEY_COLUMNS_ADVISED field which could be reordered and still satisfy the index being advised. |
| INDEX_TYPE | INDEX_TYPE | CHAR(14) | Radix (default) or EVI |
| LAST_ADVISED | LASTADV | TIMESTAMP | Last time this row was updated |
| TIMES_ADVISED | TIMESADV | BIGTINT | Number of times this index has been advised |
| ESTIMATED_CREATION_TIME | ESTTIME | INT | Estimated number of seconds for index creation |
| REASON_ADVISED | REASON | CHAR(2) | Coded reason why index was advised |
| LOGICAL_PAGE_SIZE | PAGESIZE | INT | Recommended page size for index |
| MOST_EXPENSIVE_QUERY | QUERYCOST | INT | Execution time in seconds of the query |
| AVERAGE_QUERY_ESTIMATE | QUERYEST | INT | Average execution time in seconds of the query |
| TABLE_SIZE | TABLE_SIZE | BIGINT | Number of rows in table when the index was advised |
| NLSS_TABLE_NAME | NLSSNAME | CHAR(10) | NLSS table to use for the index |
| NLSS_TABLE_SCHEMA | NLSSDBNAME | CHAR(10) | Library name of the NLSS table |
