tSQLDWHInput Standard properties - 6.4

Azure SQL Data Warehouse

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Talend Documentation Team
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6.4
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Data Governance > Third-party systems > Cloud storages > Azure components > Azure SQL Data Warehouse components
Data Quality and Preparation > Third-party systems > Cloud storages > Azure components > Azure SQL Data Warehouse components
Design and Development > Third-party systems > Cloud storages > Azure components > Azure SQL Data Warehouse components
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Talend Studio

These properties are used to configure tSQLDWHInput running in the Standard Job framework.

The Standard tSQLDWHInput component belongs to two families: Cloud and Databases.

The component in this framework is available in all Talend products.

Basic settings

Use an existing connection

Select this check box and in the Component List click the relevant connection component to reuse the connection details you already defined.

When a Job contains the parent Job and the child Job, if you need to share an existing connection between the two levels, for example, to share the connection created by the parent Job with the child Job, you have to:

  1. In the parent level, register the database connection to be shared in the Basic settings view of the connection component which creates that very database connection.

  2. In the child level, use a dedicated connection component to read that registered database connection.

For an example about how to share a database connection across Job levels, see Talend Studio User Guide.

Property Type

Select the way the connection details will be set.

  • Built-In: The connection details will be set locally for this component. You need to specify the values for all related connection properties manually.

  • Repository: The connection details stored centrally in Repository > Metadata will be reused by this component. You need to click the [...] button next to it and in the pop-up Repository Content dialog box, select the connection details to be reused, and all related connection properties will be automatically filled in.

JDBC Provider

Select the provider of the JDBC driver to be used.

Host

Specify the IP address or hostname of the Azure SQL Data Warehouse to be used.

Port

Specify the listening port number of the Azure SQL Data Warehouse to be used.

Schema

Enter the name of the Azure SQL Data Warehouse schema.

Database

Specify the name of the Azure SQL Data Warehouse to be used.

Username and Password

Enter the user authentication data to access the Azure SQL Data Warehouse.

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

Schema and Edit schema

A schema is a row description. It defines the number of fields (columns) to be processed and passed on to the next component. The schema is either Built-In or stored remotely in the Repository.

  • Built-In: You create and store the schema locally for this component only. Related topic: see Talend Studio User Guide.

  • Repository: You have already created the schema and stored it in the Repository. You can reuse it in various projects and Job designs. Related topic: see Talend Studio User Guide.

Click Edit schema to make changes to the schema. Note that if you make changes, the schema automatically becomes built-in.

  • View schema: choose this option to view the schema only.

  • Change to built-in property: choose this option to change the schema to Built-in for local changes.

  • Update repository connection: choose this option to change the schema stored in the repository and decide whether to propagate the changes to all the Jobs upon completion. If you just want to propagate the changes to the current Job, you can select No upon completion and choose this schema metadata again in the [Repository Content] window.

Table name

Specify the name of the table to be used.

Query Type

Select the way the query will be set.

  • Built-in: Fill in manually the query statement or build it graphically using SQLBuilder.

  • Repository: Select the relevant query stored in the Repository. The Query field gets accordingly filled in.

Guess Query

Click this button to generate the query which corresponds to your table schema in the Query field.

Guess schema

Click this button to generate the schema columns based on the query specified in the Query field.

Query

Specify the query paying particularly attention to properly sequence the fields in order to match the schema definition.

Specify a data source alias

Select this check box and in the Data source alias field displayed, specify the alias of a data source created on Talend Runtime side to use the shared connection pool defined in the data source configuration. This option works only when you deploy and run your Job in Talend Runtime. For a related use case, see Deploying your Job on Talend Runtime to retrieve data from a MySQL database.

This check box is not available when the Use an existing Connection check box is selected.

Advanced settings

Additional JDBC Parameters

Specify additional connection properties for the database connection you are creating. The properties are separated by semicolon and each property is a key-value pair. For example, encrypt=true;trustServerCertificate=false; hostNameInCertificate=*.database.windows.net;loginTimeout=30; for Azure SQL database connection.

Trim all the String/Char columns

Select this check box to remove leading and trailing whitespace from all the String/Char columns.

Trim column

Select the check box(es) in the Trim column to remove leading and trailing whitespace from the corresponding column(s).

This property is not available if the Trim all the String/Char columns check box is selected.

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at the 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.

NB_LINE

The number of rows processed. This is an After variable and it returns an integer.

QUERY

The query statement being processed. This is a Flow variable and it returns a string.

Usage

Usage rule

This component is usually used as a start component of a Job or Subjob and it always needs an output link.

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 Talend Studio User Guide.

Limitation

Note that some features that are supported by other databases are not supported by Azure SQL Data Warehouse. For more information, see Unsupported table features.