tVerticaBulkExec Standard properties - 7.3

Vertica

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Cloud
7.3
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Talend Big Data
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Data Governance > Third-party systems > Database components > Vertica components
Data Quality and Preparation > Third-party systems > Database components > Vertica components
Design and Development > Third-party systems > Database components > Vertica components

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

The Standard tVerticaBulkExec component belongs to the Databases 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 Dynamic database components.

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.

DB Version

Select the version of the database.

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.

Host

The IP address or hostname of the database.

Port

The listening port number of the database.

Database

The name of the database.

Schema

The schema of the database.

Username and Password

The database user authentication data.

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.

Table

The name of the table into which data will be written.

Action on table

Select an operation to be performed on the table defined.

  • Default: No operation is carried out.

  • Drop and create table: The table is removed and created again.

  • Create table: The table does not exist and gets created.

  • Create table if does not exist: The table is created if it does not exist.

  • Drop table if exist and create: The table is removed if it already exists and created again.

  • Clear table: The table content is deleted. You have the possibility to rollback the operation.

Use existing dynamic schema

Select this option to use a dynamic schema generated by a tSetDynamicSchema component. This option requires at least one tSetDynamicSchema component.

From the Dynamic schema drop-down list, select the component that generates the desired dynamic schema.

Note: This option is available only if you have installed the R2020-07 Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator.

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.

When the schema to be reused has default values that are integers or functions, ensure that these default values are not enclosed within quotation marks. If they are, you must remove the quotation marks manually.

You can find more details about how to verify default values in retrieved schema in Talend Help Center (https://help.talend.com).

Click Edit schema to make changes to the schema.
Note: 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.

Use schema columns for Copy

Select this check box to use the column option in the COPY statement so that you can restrict the load to one or more specified columns in the table. For more information, see the Vertica COPY SQL Statement.

File Name

The path to the file from which data will be loaded.

The file should be located on the same machine where the Studio is installed or where the Job using this component is deployed.

This property is available only when there is no input flow.

Compression mode

Select the compression mode for the file from which data will be loaded.

This property is available only when you are using Vertica 6.0 and later.

Advanced settings

Additional JDBC Parameters

Specify additional JDBC parameters for the database connection created.

This property is not available when the Use an existing connection check box in the Basic settings view is selected.

Action on data

Select an action that will be performed on the data of the table defined.

  • Bulk insert: Insert multiple rows into the table at once instead of doing single row inserts. If duplicates are found, the Job stops.

  • Bulk update: Make simultaneous updates to multiple rows.

Stream name

The stream name of a load, which helps identify a particular load.

This property is available only when you are using Vertica 6.0 and later.

Write to ROS (Read Optimized Store)

Select this check box to store data in a physical storage area, in order to optimize the reading, as the data is compressed and pre-sorted.

Exit Job on no rows loaded

The Job automatically stops if no row has been loaded.

Missing columns as null

Select this check box to insert NULL values for the missing columns when there is insufficient data to match the columns specified in the schema.

This property is available only when you are using Vertica 6.0 and later.

Skip Header

Select this check box and in the field displayed next to it, specify the number of records to skip in the file.

This property is available only when you are using Vertica 6.0 and later.

Record terminator

Select this check box and in the field displayed next to it, specify the literal character string used to indicate the end of each record in the file.

This property is available only when you are using Vertica 6.0 and later.

Enclosed by character

Select this check box to set the character within which data is enclosed.

This property is available only when you are using Vertica 6.0 and later.

Escape char

Select this check box and in the field displayed specify the character to be escaped when loading data into Vertica. By default, the check box is selected and the default escape character is \.

Fields terminated by

The character, string or regular expression to separate fields.

Null String

The string displayed to indicate that the value is null.

Reject not fitted values

Select this check box to reject data rows of type char, varchar, binary, and varbinary if they do not fit the target table.

This property is available only when you are using Vertica 6.0 and later.

Maximum number of rejected records

Select this check box and in the field displayed next to it, specify the maximum number of records that can be rejected before a load fails.

This property is available only when you are using Vertica 6.0 and later.

Stop and rollback if any row is rejected

Select this check box to stop and roll back a load without loading any data if any row is rejected.

This property is available only when you are using Vertica 6.0 and later.

Don't commit

Select this check box to perform a bulk load transaction without committing the results automatically. This is useful if you want to execute multiple bulk loads in a single transaction.

This property is available only when you are using Vertica 6.0 and later.

Rejected data file

Specify the file into which rejected rows will be written.

This property is available only when Bulk insert is selected from the Action on data drop-down list.

Exception log file

Specify the file into which the exception log will be written. This log explains why each rejected row was rejected.

This property is available only when Bulk insert is selected from the Action on data drop-down list.

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

ACCEPTED_ROW_NUMBER

The number of rows loaded into the database. This is an After variable and it returns an integer.

REJECTED_ROW_NUMBER

The number of rows rejected. 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

Talend Studio and the Vertica database create very fast and affordable data warehouse and data mart applications. For more information about how to configure Talend Studio to connect to Vertica, see Talend and HP Vertica Tips and Techniques.

You can use this component in either of the following two ways to write data into Vertica.

  • It can be used as a Standalone component of a subJob to write data into Vertica from a file generated by a tVerticaOutputBulk component.

  • You can link a tFileInputRaw component to it via a Row > Main connection to feed data into Vertica. In this way, the tFileInputRaw component should be in the Stream the file mode and there should be only one column of Object type defined in its schema.

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.