Merge Task Element
X-Ref:
- Ast Merge Task Node
- Ast Task Base Node
- Ast Task Node
- Ast Scope Boundary Node
Attributes
| Attribute | API Type | Default | Description |
|---|---|---|---|
| Name | String | Specifies the name of the object. This name can be used to reference this object from anywhere else in the program. This is a required property | |
| TargetConstraintName | AstTableKeyBaseNode | This value specifies the constraint that is used to determine matching rows in the source and target tables during the merge operation. Since the target constraint can be uniquely identified with a scoped name, there is no need to separately reference the target table name. This is a required reference to an existing definiton. | |
| UnspecifiedColumnDefaultUsageType | MergeColumnUsage | Compare | This value specifies how to deal with columns that do not have mappings specified in the Columns collection. If serves as the default treatment for columns. This is a required property |
| DelayValidation | Boolean | false | This value specifies whether the validation of the Dataflow task in SSIS should be delayed until the package is executed. DelayValidation is most often used when the ETL process references tables and other server assets that were created in an earlier stage of the data processing run. |
| Disabled | Boolean | false | This value specifies whether the item is disabled. The default value is False. |
| DisableEventHandlers | Boolean | false | This value specifies whether the event handlers for this task, container, or package should be prevented from executing. The default value is False. |
| DisableScd | Boolean | False | This value specifies whether the automated slowly changing dimension mapping should be disabled. This property is normally set to True when data is being extracted from a source into a slowly changing dimension and the data source has already been processed for the appropriate slowly changing dimension behavior. |
| ExecutionValueVariableName | AstVariableBaseNode | Specifies a variable to hold the execution results of this component. This references an existing definiton. | |
| FailPackageOnFailure | Boolean | false | This value determines whether the container will fail when a container component fails. If this container corresponds to a package, then the only valid value is False. |
| FailParentOnFailure | Boolean | false | This value determines whether the parent container will fail when a child container failes. The default value is False. |
| ForcedExecutionValue | String | "0" | If the ForceExecutionValue property is set to True, then the container will return the value stored in this property as its execution value. Otherwise, this value will be ignored. The default value for ForecedExecutionValue is 0. |
| ForcedExecutionValueDataType | TypeCode | Int32 | This property specifies the data type of the value stored in the ForceExecutionValue property. |
| ForceExecutionResult | ForceExecutionResult | None | This value indicates whether a specified execution result value will result if the container runs. The default value is None, which means that the container does not force a specified outcome. |
| ForceExecutionValue | Boolean | false | Gets or sets a Boolean that indicates whether the execution value of the container should be forced to contain the value specified in the ForcedExecutionValue property. |
| Id | Guid | 00000000-0000-0000-0000-000000000000 | Allows the developer to specify a unique identifier (GUID) for the package. This can be used to retain a consistent ID between builds. |
| IsolationLevel | IsolationLevel | Serializable | Sets the Isolation Level which controls how Transactions behave for this container. |
| Language | Language | Inherited | This specifies the default language to be used by this task and its descendants. |
| LoggingMode | LoggingMode | Inherit | This value specifies whether logging is enabled or disabled by the container or by the parent container. The default value is UseParentSetting. |
| MaxErrorCount | Int32 | 1 | This value specifies the maximum number of errors allowed to occur before a package is forced to stop running. The default value is 1. |
| TargetConnectionName | AstDbConnectionNode | Specifies the target connection. for the merge statement (OleDb or ADO.NET). Optional. If it is not specified, the connection will default to the TargetConstraint table's connection. This references an existing definiton. | |
| TransactionMode | ContainerTransactionMode | Join | This value specifies the transaction context in which this task will execute. |
Singleton Children
| Child | API Type | Description |
|---|---|---|
| <TableSource /> | AstTableResourceNode | The AstTableResourceNode type is used for creating references to a table that has been modeled in the Biml project. This is a required property |
| <ExternalTableSource /> | AstUnmanagedTableResourceNode | The AstUnmanagedTableResourceNode type is used for creating references to a table stored in an existing relational database that has not been modeled in the Biml project. This is a required property |
| <PrecedenceConstraints /> | AstTaskflowPrecedenceConstraintsNode | The AstTaskflowPrecedenceConstraintsNode type corresponds directly to a precedence constraint in a SQL Server Integration Services task control flow. |
| <SourceRowRestriction /> | String | String is the .NET Framework String class. More information can be found at http://msdn.microsoft.com/en-us/library/system.string.aspx. |
Collection Children
| Child | API Type | Description |
|---|---|---|
| <Annotations> <Annotation /> </Annotations> | AstAnnotationNode | This is a collection of annotation items that can be used to specify documentation, tags, or other information. Annotations are particularly useful for storing information about nodes that can be used by BimlScript code. |
| <Columns> <Column /> </Columns> | AstMergeColumnNode | This is a collection of explicit merge column mapping definitions. |
| <Events> <Event /> </Events> | AstTaskEventHandlerNode | This is a collection of event handlers that can respond to SQL Server Integration Services events that are raised on this task. |
| <Expressions> <Expression /> </Expressions> | AstPropertyExpressionNode | This is a collection of SSIS expression definitions for property value overrides that are specific to this task, container, or package. |
| <LogEvents> <LogEvent /> </LogEvents> | AstLogEventNode | This is a container for log event definitions that are specific to this task, container, or package. |
| <LogProviders> Multiple Choices... </LogProviders> | AstLogProviderBaseNode | Defines the log providers to use for the SSIS task or container This is a container for log provider definitions that are specific to this task, container, or package. |
| <QueryHints> <QueryHint /> </QueryHints> | AstTableHintParameterNode | This is a collection of query hint definitions for the Merge task. |
| <TableHints> <TableHint /> </TableHints> | AstTableHintParameterNode | This is a collection of table hint definitions for the Merge task. |
| <Variables> <Variable /> </Variables> | AstVariableNode | This is a container for variable definitions that are specific to this task, container, or package. |