Hierarchy
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DB-DB4 (Application Component) DB2 for AS/400⤷
STU4 (Package) CCMS / AS/400
Basic Data
| Data Element | QQCIU |
| Short Description | iSeries: Index Usage (Database Monitor) |
Data Type
| Category of Dictionary Type | D | Domain |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | QQDEC150 | |
| Data Type | DEC | Counter or amount field with comma and sign |
| Length | 15 | |
| Decimal Places | 0 | |
| Output Length | 19 | |
| Value Table |
Further Characteristics
| Search Help: Name | ||
| Search Help: Parameters | ||
| Parameter ID | ||
| Default Component name | ||
| Change document | ||
| No Input History | ||
| Basic direction is set to LTR | ||
| No BIDI Filtering |
Field Label
| Length | Field Label | |
| Short | 11 | Ind. Usage |
| Medium | 21 | Index Usage |
| Long | 41 | Index Usage |
| Heading | 55 | Index Usage |
Documentation
Definition
QQCIU is the number of times a statement was implemented using an existing access path (index).
If the most expensive execution of a statement was thus implemented, more details about the table scan performed (for example, why an index was used) are found in the record in table SQ3001_DB4 corresponding to that statement.
Example
The Open SQL statement (with an appropriate internal table declaration for itab) would list all statements (library/SQL package/statement name), physical files (tables), and the reason code for using the index accessed which were implemented using an existing index when the most expensive execution occurred:
select b~qqplib b~qqpnam b~qqsnam a~qqptln a~qqptfn a~qqrcod
into corrseponding fields of table itab
from SQ3001_DB4 as a
inner join SQ1000_DB4 as b
where a~qqkey = b~qqkey.
History
| Last changed by/on | SAP | 20070813 |
| SAP Release Created in |
