tSQLTemplateRollback - 6.1

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tSQLTemplateRollback properties

Component family




tSQLTemplateRollback cancels the transaction committed in the database you connect to.


To avoid committing transactions accidentally.

Basic settings

Database Type

Select the database type you want to connect to from the list.


Component List

Select the ELT database connection component in the list if more than one connection is planned for the current Job.


Close Connection

Clear this check box to continue to use the selected connection once the component has performed its task.

Advanced settings

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at a Job level as well as at each component level.

SQL Template

SQL Template List

To add a default system SQL template: Click the Add button to add the default system SQL template(s) in the SQL Template List.

Click in the SQL template field and then click the arrow to display the system SQL template list. Select the desired system SQL template provided by Talend.

Note: You can create your own SQL template and add them to the SQL Template List.

To create a user-defined SQL template:

-Select a system template from the SQL Template list and click on its code in the code box. You will be prompted by the system to create a new template.

-Click Yes to open the SQL template wizard.

-Define your new SQL template in the corresponding fields and click Finish to close the wizard. An SQL template editor opens where you can enter the template code.

-Click the Add button to add the new created template to the SQL Template list.

For more information, see Talend Studio User Guide.

Global Variables

NB_LINE: the number of rows read by an input component or transferred to an output component. This is an After variable and it returns an integer.

QUERY: the SQL query statement being processed. This is a Flow variable and it returns a string.

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl + Space to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio User Guide.


This component is more commonly used with the tSQLTemplateCommit component and the ELT database connection component.


If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.



Related scenarios

For a tSQLTemplateRollback related scenario, see Scenario: Filtering and aggregating table columns directly on the DBMS.