tSnowflakeInput Standard properties - 7.3

Snowflake

EnrichVersion
Cloud
7.3
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Talend Big Data
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Talend Studio
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Data Governance > Third-party systems > Cloud storages > Snowflake components
Data Quality and Preparation > Third-party systems > Cloud storages > Snowflake components
Design and Development > Third-party systems > Cloud storages > Snowflake components

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

The Standard tSnowflakeInput component belongs to the Cloud family.

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

Note: This component is a specific version of a dynamic database connector. The properties related to database settings vary depending on your database type selection. For more information about dynamic database connectors, see pzz1550477830065.html.

Basic settings

Database

Select a type of database from the list and click Apply.

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.

This property is not available when other connection component is selected from the Connection Component drop-down list.

Connection Component

Select the component that opens the database connection to be reused by this component.

Account

In the Account field, enter, in double quotation marks, the account name that has been assigned to you by Snowflake.

Authentication Type

Set the authentication type.
  • Basic: Select this option if key pair authentication is not enabled.
  • Key Pair: Select this option if key pair authentication is enabled. For information about key pair authentication, see Using Key Pair Authentication.
  • OAuth 2.0: Select this option to use external OAuth for data accessing. See External OAuth Overview for related information.
Note: Before selecting the Key Pair option, make sure you have set the key pair authentication data in the Basic settings view of the tSetKeystore component as follows.
  • Leave the TrustStore type field unchanged;
  • Set TrustStore file to "";
  • Clear the TrustStore password field;
  • Select Need Client authentication;
  • Enter the path to the key store file in double quotation marks in the KeyStore file field (or click the […] button to the right of the KeyStore file field and navigate to the key store file);
  • Enter the key store file password in the KeyStore password field;
  • Clear the Check server identity option.
Note: The OAuth 2.0 option is available only if you have installed the R2020-06 Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.

OAuth token endpoint

Enter OAuth 2.0 token endpoint.

This option is available when OAuth 2.0 is selected from the Authentication Type drop-down list.

Client ID

Enter the client ID of your application.

This option is available when OAuth 2.0 is selected from the Authentication Type drop-down list.

Client Secret

Enter the client secret of your application.

This option is available when OAuth 2.0 is selected from the Authentication Type drop-down list.

Grant type

Set the grant type for retrieving the access token. Two options are provided: Client Crendentials and Password.

Click Client Credentials and Resource Owner Password Credentials for related information.

This option is available when OAuth 2.0 is selected from the Authentication Type drop-down list.

Note: This option is available only if you have installed the R2020-10 Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.

OAuth username

Enter the OAuth username.

This option is available when Password is selected from the Grant type drop-down list.

OAuth password

Enter the OAuth password.

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

This option is available when Password is selected from the Grant type drop-down list.

Note: OAuth password does not support spaces.

Scope

Enter the scope. See Scopes for related information.

This option is available when OAuth 2.0 is selected from the Authentication Type drop-down list.

User Id and Password

Enter, in double quotation marks, your authentication information to log in to Snowflake.

  • In the User ID field, enter, in double quotation marks, your login name that has been defined in Snowflake using the LOGIN_NAME parameter of Snowflake. For details, ask the administrator of your Snowflake system.

  • 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.

Warehouse

Enter, in double quotation marks, the name of the Snowflake warehouse to be used. This name is case-sensitive and is normally upper case in Snowflake.

Schema

Enter, within double quotation marks, the name of the database schema to be used. This name is case-sensitive and is normally upper case in Snowflake.

Database

Enter, in double quotation marks, the name of the Snowflake database to be used. This name is case-sensitive and is normally upper case in Snowflake.

Table

Click the [...] button and in the displayed wizard, select the Snowflake table to be used.

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. When you create a Spark Job, avoid the reserved word line when naming the fields.

Built-In: You create and store the schema locally for this component only.

Repository: You have already created the schema and stored it in the Repository. You can reuse it in various projects and Job designs.

If the Snowflake data type to be handled is VARIANT, OBJECT or ARRAY, while defining the schema in the component, select String for the corresponding data in the Type column of the schema editor wizard.

Click Edit schema to make changes to the schema. If the current schema is of the Repository type, three options are available:

  • 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.

Note that if the input value of any non-nullable primitive field is null, the row of data including that field will be rejected.

This component offers the advantage of the dynamic schema feature. This allows you to retrieve unknown columns from source files or to copy batches of columns from a source without mapping each column individually. For further information about dynamic schemas, see Talend Studio User Guide.

This dynamic schema feature is designed for the purpose of retrieving unknown columns of a table and is recommended to be used for this purpose only; it is not recommended for the use of creating tables.

Manual Query

Select this check box and in the Full SQL query string field, enter, within double quotation marks, the query statement to be executed. For information about the Snowflake SQL commands, see SQL Command Reference.

Condition

Enter, in double quotation marks, the boolean expression to be used to filter data from your Snowflake table. This expression is actually used as WHERE clause in the SELECT query run by tSnowflakeInput.

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, encryption=1;clientname=Talend.

This field is available only when you select Use this Component from the Connection Component drop-down list and select Internal from the Storage drop-down list in the Basic settings view.

Login Timeout

Specify the timeout period (in minutes) of Snowflake login attempts. An error will be generated if no response is received in this period.

This field is available only when you select Use this Component from the Connection Component drop-down list and select Internal from the Storage drop-down list in the Basic settings view.

Role

Enter, in double quotation marks, the default access control role to use to initiate the Snowflake session.

This role must already exist and has been granted to the user ID you are using to connect to Snowflake. If this field is left empty, the PUBLIC role is automatically granted. For information about Snowflake access control model, see Understanding the Access Control Model.

This field is available only when you select Use this Component from the Connection Component drop-down list and select Internal from the Storage drop-down list in the Basic settings view.

Region ID (Deprecated)

Enter a region ID in double quotation marks, for example eu-west-1 or east-us-2.azure. For information about Snowflake Region ID, see Supported Cloud Regions.

For Snowflake components other than tSnowflakeConnection, this field is available when you select Use This Component from the Connection Component drop-down list in the Basic settings view.

Note: This field is available only when you have installed the R2021-04 Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.

Use unquoted object identifiers

Select this check box to use unquoted table name and schema column names. Note that unquoted identifiers need to match the Snowflake Identifier Syntax. A column name or a table name not conforming to the Snowflake Identifier Syntax will be quoted even if this checkbox is selected.

If you deselect the check box, all object identifiers are automatically quoted.

This property is not available when you select the Manual Query check box.

For information about the Snowflake Identifier Syntax, see Identifier Requirements.

Note: This option is available only if you have installed the R2020-08 Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.

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

NB_LINE

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

ERROR_MESSAGE

The error message generated by the component when an error occurs. This is an After variable and it returns a string.

Usage

Usage rule

This component is start component of a data flow in your Job. It sends data to other components via a Row link.