EnumReferencedKeys Method
Questa funzionalità verrà rimossa in una delle prossime versioni di Microsoft SQL Server. Evitare di utilizzare questa funzionalità in un nuovo progetto di sviluppo e prevedere interventi di modifica nelle applicazioni in cui è attualmente implementata.
The EnumReferencedKeys method returns a QueryResults object that enumerates the PRIMARY KEY and UNIQUE constraints.
Sintassi
object
.EnumReferencedKeys( [ ReferencedTable ] , [ IncludeAll ] )as QueryResults
Parts
- object
Expression that evaluates to an object in the Applies To list.
- ReferencedTable
Optional. String that names an existing Microsoft SQL Server table. Restricts result set membership to list only references to objects defined on the specified table.
- IncludeAll
TRUE or FALSE.
Prototype (C/C++)
HRESULT EnumReferencedKeys(
LPSQLDMOQUERYRESULTS* ppResults,
SQLDMO_LPCSTR ReferencedTableName = NULL,
BOOL IncludeAllCandidates = NULL);
Returns
A QueryResults object that contains one result set defined by these columns.
| Column | Data type | Description |
|---|---|---|
candidate_key |
nvarchar(129) |
Name of a PRIMARY KEY or UNIQUE constraint. |
candidate_table |
nvarchar(262) |
Name of a table on which a PRIMARY KEY or UNIQUE constraint is defined. |
referenced |
bit |
When 1, the table depends on the PRIMARY KEY or UNIQUE constraint listed in the result set. |
Osservazioni
When IncludeAll is TRUE, the result set enumerates all PRIMARY KEY and UNIQUE constraints defined in the database. The value of the result set column referenced determines table object dependency on the listed PRIMARY KEY or UNIQUE constraint.
When IncludeAll is FALSE (default), the result set enumerates only those PRIMARY KEY or UNIQUE constraints on which the table depends.