tELTMSSqlMap Standard properties

Use an existing connection

Select this check box and in the Component List drop-down list, select the desired connection component to reuse the connection details you already defined.

JDBC Provider

Select the provider of the JDBC driver to be used, either Microsoft (the default, recommended) or Open source JTDS.

When Microsoft is selected, you need to download the Microsoft JDBC Driver for SQL Server on Microsoft Download Center, unpack the downloaded zip file, choose a jar in the unzipped folder based on your JRE version, rename the jar to mssql-jdbc.jar and install it manually. For more information about choosing the jar, see the System Requirements information on Microsoft Download Center.

When using this component with Datasource in Talend Runtime, you need to use the Open source JTDS driver.

ELT MSSql Map Editor

The ELT Map editor allows you to define the output schema and make a graphical build of the SQL statement to be executed. The column names of schema can be different from the column names in the database.

You can filter schema columns in an input or output table by clicking the Enable/disable column name filter button in the corresponding table and entering the search keyword in the field displayed.

You can click on the upper left corner and in the Property Settings dialog box displayed, select the Add quotes in columns when generating query check box to add quotes for the column names in the generated SQL query. This check box is displayed as Delimited identifiers if you have not installed the 8.0 R2022-11 Talend Studio monthly update or a later one provided by Talend.

Style link

Select the way in which links are displayed.

Auto: By default, the links between the input and output schemas and the Web service parameters are in the form of curves.

Bezier curve: Links between the schema and the Web service parameters are in the form of curve.

Line: Links between the schema and the Web service parameters are in the form of straight lines.

This option slightly optimizes performance.

Property type

Either Built-in or Repository.

• Built-in: No property data stored centrally.
• Repository: Select the Repository file where Properties are stored. The following fields are pre-filled in using fetched data.

Host

Database server IP address.

Port

Listening port number of DB server.

Database

Name of the database.

Username and Password

DB user authentication data.

To enter the password, click the [...] button next to the password field, enter the password in double quotes in the pop-up dialog box, and click OK to save the settings.

Dry run

Select this option to populate the QUERY variable of the ELTOutput component connected to the component while not connecting to the database or executing queries.

Additional JDBC parameters

Specify additional connection properties for the DB connection you are creating. This option is not available if you have selected the Use an existing connection check box in the Basic settings.

Select this option to use Azure Active Directory authentication when establishing the connection. See Azure AD Authentication for related information.

This option is only available when Microsoft is selected from the JDBC Provider drop-down list in the Basic settings view.

tStatCatcher Statistics

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

Global Variables

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 more information about variables, see Using contexts and variables.

Usage rule

tELTMSSqlMap is used along with a tELTMSSqlInput and tELTMSSqlOutput. Note that the Output link to be used with these components must correspond strictly to the syntax of the table name.

Dynamic settings

Click the [+] button to add a row in the table and fill the Code field with a context variable to choose your database connection dynamically from multiple connections planned in your Job. This feature is useful when you need to access database tables having the same data structure but in different databases, especially when you are working in an environment where you cannot change your Job settings, for example, when your Job has to be deployed and executed independent of Talend Studio.

The Dynamic settings table is available only when the Use an existing connection check box is selected in the Basic settings view. Once a dynamic parameter is defined, the Component List box in the Basic settings view becomes unusable.

For examples on using dynamic parameters, see Reading data from databases through context-based dynamic connections and Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic settings and context variables, see Dynamic schema and Creating a context group and define context variables in it.