EnumDependencies Method
后续版本的 Microsoft SQL Server 将删除该功能。请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。
The EnumDependencies method returns a QueryResults object that enumerates Microsoft SQL Server database user objects and user object dependency relationships.
语法
object
.EnumDependencies( [ DependencyType ] )as QueryResults
Parts
object
Expression that evaluates to an object in the Applies To list.DependencyType
Long integer that directs output as described in Settings.
Prototype (C/C++)
HRESULT EnumDependencies(
LPSQLDMOQUERYRESULTS* ppResults,
SQLDMO_DEPENDENCY_TYPE DependencyType = SQLDMODep_Parents);
Settings
Specify the value of the DependencyType argument using these SQLDMO_DEPENDENCY_TYPE values.
Constant |
Value |
Description |
|---|---|---|
SQLDMODep_Children |
262144 |
Lists all components that depend on the referenced SQL Server component. |
SQLDMODep_DRIOnly |
2097152 |
Lists components that depend on the referenced SQL Server component in a DRI relationship. |
SQLDMODep_FirstLevelOnly |
1048576 |
Lists only immediate parents. Combine with SQLDMODep_Children to list only immediate children. |
SQLDMODep_FullHierarchy |
65536 |
Alters the default result set describing hierarchy relationship in a result set row. |
SQLDMODep_OrderDescending |
131072 |
Applies descending order to returned list. |
SQLDMODep_Parents |
0 |
Lists all objects on which the referenced SQL Server component depends. |
SQLDMODep_/ReturnInputObject |
524288 |
Includes SQL Server component referenced by the SQL Distributed Management Objects (SQL-DMO) object in the list returned. |
SQLDMODep_Valid |
4128768 |
All dependency constants combined using an OR logical operator. |
Returns
A QueryResults object that contains up to three result sets. When no user-defined data types, defaults, or rules are contained in the dependency tree, a single result set is returned, defined by these columns.
Column |
Data type |
Description |
|---|---|---|
oObjName |
nvarchar(129) |
Database object name. |
oOwner |
nvarchar(129) |
Database object owner name. |
oSequence |
smallint |
Indicator of distance in the hierarchy between the specified object and the object listed. |
oType |
integer |
Database object type, enumerated by SQLDMO_OBJECT_TYPE. |
RelName |
nvarchar(129) |
Displayed when SQLDMODep_FullHierarchy is specified. Hierarchically-related database object name. |
RelOwner |
nvarchar(129) |
Displayed when SQLDMODep_FullHierarchy is specified. Hierarchically-related database object owner name. |
RelType |
integer |
Displayed when SQLDMODep_FullHierarchy is specified. When the RelName value is nonNULL, RelType is the hierarchically related database object type, enumerated by SQLDMO_OBJECT_TYPE. When RelName value is NULL, the value 0 is returned and can be ignored. |
When the dependency tree contains defaults, rules, or user-defined data types, one or two additional result sets are returned by the EnumDependencies method. When rules or defaults are contained, a result set is returned, defined by these columns.
Column |
Data type |
Description |
|---|---|---|
oOwner |
nvarchar(129) |
Database object owner name. |
oRuleDefName |
nvarchar(129) |
Database object name. |
oSequence |
smallint |
Indicator of distance in the hierarchy between the specified object and the object listed. |
oType |
integer |
Database object type, enumerated by SQLDMO_OBJECT_TYPE. Value is SQLDMOObj_Default or SQLDMOObj_Rule for all rows. |
When user-defined data types are contained in the dependency tree, a result set that enumerates the data types is returned. The user-defined data type result set is defined by these columns.
Column |
Data type |
Description |
|---|---|---|
oType |
integer |
Database object type, enumerated by SQLDMO_OBJECT_TYPE. Value is SQLDMOObj_UserDefinedDatatype for all rows. |
oUDDTName |
nvarchar(129) |
User-defined data type name. |
oOwner |
nvarchar(129) |
User-defined data type owner name. |
oSequence |
smallint |
Indicator of distance in the hierarchy between the specified object and the object listed. |