# tVectorWiseInput Executes a DB query with a strictly defined order which must correspond to the schema definition. tVectorWiseInput reads a database and extracts fields based on a query. It passes on the field list to the next component via a Main row link. Information noteNote: * This component is available only when you have installed the 8.0.1-R2023-02 Talend Studio Monthly update or a later one delivered by Talend. For more information, check with your administrator. * If you plan to upgrade from an earlier version of Talend Studio that has Vectorwise components, please make sure you apply the 8.0.1-R2023-02 Talend Studio Monthly update before starting the upgrade process. ## tVectorWiseInput Standard properties These properties are used to configure tVectorWiseInput running in the Standard Job framework. The Standard tVectorWiseInput component belongs to the Databases family. The component in this framework is available in all Talend products. Information noteNote: 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 [DB Generic components](https://help.qlik.com/talend/r/en-US/8.0/components/db-generic/db-generic-component). ## Basic settings | Properties | Description | | --- | --- | | Database | Select the desired database type from the list and click
Apply. | | Property type | | | ![](https://help.qlik.com/talend/en-US/components/8.0/Resources/images/Save_Icon.png) | Click this icon to open a database connection wizard and store the
database connection parameters you set in the component Basic settings view.

For more information about setting up and storing database
connection parameters, see [Centralizing database metadata](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/centralizing-database-metadata). | | 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.

Information noteNote: When a Job contains the parent Job and the child Job, do the following if you
want to share an existing connection between the parent Job and the child Job (for example,
to share the connection created by the parent Job with the child Job).

  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 [Sharing a database connection](https://help.qlik.com/talend/r/en-US/7.3/studio-user-guide/sharing-database-connection). | | Server | Database server IP address. | | Port | Listening port number of the DB server. | | Database | Name of the database. | | Username and
Password | Authentication information of the database user.

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. | | Schema and Edit
Schema | | | Table name | Name of the table to be read. | | Query type and
Query | Enter your DB query, ensuring that the field order matches the
order in the schema.


*If using the dynamic schema feature, the SELECT
query must include the \*
wildcard, to retrieve all of the columns from the table
selected.* | | Guess Query | Click this button to generate a query that corresponds to your
table schema in the Query
field. | | Guess schema | Click this button to retrieve the schema from the table. | ## Advanced settings | Properties | Description | | --- | --- | | 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. | | Trim all the String/Char columns | Select this check box to remove leading and trailing whitespace
from all the String/Char columns. | | Trim column | Define columns from which to remove leading and trailing
whitespace. | | tStat
Catcher Statistics | Select this check box to collect log data at the component
level. | ## Global Variables | Variables | Description | | --- | --- | | Global Variables | 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.


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 checkbox is
cleared, if the component has this checkbox.

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](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/contexts-and-variables). | ## Usage | Usage guidance | Description | | --- | --- | | **Usage rule** | This component covers all possible SQL queries for Vertica
databases. | | Limitation | Due to license incompatibility, one or more JARs required to use this component
are not provided. You can install the missing JARs for this particular component by
clicking the Install button on the Component tab view. You can also find out and add all missing
JARs easily on the Modules tab in the Integration perspective of Talend Studio. For
details, see [Installing external modules](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/installing-external-modules). |