# tAmazonAuroraOutput Writes, updates, makes changes or suppresses entries in an Amazon Aurora database. tAmazonAuroraOutput executes the action defined on the table and/or on the data contained in the table, based on the flow incoming from the preceding component in the Job. ## tAmazonAuroraOutput Standard properties These properties are used to configure tAmazonAuroraOutput running in the Standard Job framework. The Standard tAmazonAuroraOutput component belongs to the Cloud and the Databases families. 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 |

Either Built-In or Repository.
Built-In: No property data stored centrally.
Repository: Select the repository file in which the properties are stored. The database connection fields that follow are completed automatically using the data retrieved.

| | 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).

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.
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). | | Host | Type in the IP address or hostname of the Amazon Aurora
database. | | Port | Type in the listening port number of the Amazon Aurora
database. | | Database | Type in the name of the database you want to use. | | Username and
Password | Type in the database 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. | | Table | Type in the name of the table to be written. Note that only one table can be written at
a time. | | Action on table | On the table defined, you can perform one of the following
operations:

None: 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 not exists: The table is created if it does not exist.
Drop table if exists and create: The table is removed if it already exists and created again.
Clear table: The table content is deleted.
Truncate table: The table content is quickly deleted. However, you will not be able to rollback the operation.

| | Action on data | On the data of the table defined, you can perform one of the following
operations:

Insert: Add new entries to the table. If duplicates are found, the Job stops.
Update: Make changes to existing entries.
Insert or update: Insert a new record. If the record with the given reference already exists, an update would be made.
Update or insert: Update the record with the given reference. If the record does not exist, a new record would be inserted.
Delete: Remove entries corresponding to the input flow.
Replace: Add new entries to the table. If an old row in the table has the same value as a new row for a PRIMARY KEY or a UNIQUE index, the old row is deleted before the new row is inserted.
Insert or update on duplicate key or unique index: Add entries if the inserted value does not exist or update entries if the inserted value already exists and there is a risk of violating a unique index or primary key.
Insert Ignore: Add only new rows to prevent duplicate key errors.

Information noteWarning:

*You must specify at least one column as a
primary key on which the Update and Delete operations are based. You can do that by
clicking Edit schema and
selecting the check box(es) next to the column(s) you want to set as
primary key(s). For an advanced use, click the Advanced settings view where you can
simultaneously define primary keys for the update and delete
operations. To do that: Select the Use
field options check box and then in the Key in update column, select the check
boxes next to the column name on which you want to base the update
operation. Do the same in the Key in
delete column for the deletion operation.*

The dynamic schema feature can
be used in the following modes: Insert, Update,
Insert or update, Update or insert, Delete. | | 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.

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 Dynamic schema.

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.
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.

For more information, see Retrieving table schemas.
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.

| | Specify a data source alias | Select this checkbox and specify the alias of a data source created on the *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*.

This check box disappears when the Use an
existing connection check box is selected. | | Data source alias | Type in the alias of the data source created on the *Talend Runtime* side.

This field appears only when the Specify a
data source alias check box is selected. | | Die on error | This check box is selected by default. Clear the check box to skip the row in error and
complete the process for error-free rows. If needed, you can
retrieve the rows in error via a Row > Rejects
link. | ## Advanced settings | Properties | Description | | --- | --- | | Additional JDBC parameters | Specify additional connection properties for the database
connection you are creating.

This field disappears when the Use an
existing connection check box in the Basic settings view is selected.

Information noteNote:

You can press Ctrl+Space to access a list of
predefined global variables. | | Extend Insert | Select this check box to carry out a bulk insert of a defined set
of lines instead of inserting lines one by one. The gain in system
performance is considerable.

This check box appears only when the Insert option is selected from the Action on data list in the Basic settings view.

Information noteNote:

This option is not compatible with the Reject link. You should therefore clear the
check box if you are using a Row > Rejects
link with this component. | | Number of rows per insert | Enter the number of rows to be inserted per operation. Note that the higher the value
specified, the lower performance levels shall be due to the increase
in memory demands.

This field appears only when the Extend
Insert check box is selected. | | Use Batch | Select this check box to activate the batch mode for data processing.

This check box is available only when the Update or Delete
option is selected from the Action on
data list in the Basic
settings view. | | Batch Size | Specify the number of records to be processed in each batch.

This field is available only when the Use batch mode
check box is selected. | | Commit every | Enter the number of rows to be included in a batch before it is committed to the
database. This option ensures transaction quality (but not rollback)
and, above all, a higher performance level. | | Additional columns | This option allows you to call SQL functions to perform actions on columns, provided
that these are not insert, update or delete actions, or actions that
require pre-processing. This option is not available if you have
just created the database table (even if you delete it beforehand).
Click the [+] button under the
table to add column(s), and set the following parameters for each
column.

Name: Type in the name of the schema column to be altered or inserted.
SQL expression: Type in the SQL statement to be executed in order to alter or insert the data in the corresponding column.
Position: Select Before, After or Replace depending on the action to be performed on the reference column.
Reference column: Type in a reference column that tAmazonAuroraOutput can use to locate or replace the new column or the column to be modified.

| | Use field options | Select the check box for the corresponding column to customize a request, particularly
if multiple actions are being carried out on the data.

Key in update: Select the check box for the corresponding column based on which the data is updated.
Key in delete: Select the check box for the corresponding column based on which the data is deleted.
Updatable: Select the check box if the data in the corresponding column can be updated.
Insertable: Select the check box if the data in the corresponding column can be inserted.

| | Use Hint Options | Select this check box to configure the hint(s) which can help you optimize a query's
execution. | | Hint Options | Click the [+] button under the
table to add hint(s) and set the following parameters for each hint.
This table appears only when the Use Hint
Options check box is selected.

HINT: Specify the hint you need, using the syntax /*+ */.
POSITION: Specify where you put the hint in an SQL statement.
SQL STMT*: Select an SQL statement INSERT, UPDATE, or DELETE you need to use.

| | Debug query mode | Select this check box to display each step during processing entries
in a database. | | Use duplicate key update mode insert | Select this check box to activate the ON DUPLICATE KEY UPDATE mode, and then click the
[+] button under the table
displayed to add column(s) to be updated and specify the update
action to be performed on the corresponding column.

Column: Enter the name of the column to be updated.
Value: Enter the action to be performed on the column.

This check box is available only when the Insert
option is selected from the Action on
data list in the Basic
settings view. | | 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 | Variables | Description | | --- | --- | | Global Variables | NB\_LINE: the number
of rows read by an input component or transferred to an output component. This is an
After variable and it returns an integer.

NB\_LINE\_UPDATED: the number of rows updated.
This is an After variable and it returns an integer.

NB\_LINE\_INSERTED: the number of
rows inserted. This is an After variable and it returns an integer.

NB\_LINE\_DELETED: the
number of rows deleted. This is an After variable and it returns an integer.

NB\_LINE\_REJECTED: 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. 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 must be used as an output component. It allows you to carry out actions
on a table or on the data of a table in an Amazon Aurora database.
It also allows you to create a reject flow using a Row > Rejects link to filter data in error. For a similar
scenario, see . | | 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](https://help.qlik.com/talend/r/en-US/8.0/components/defining-context-groups/reading-data-from-databases-through-context-based-dynamic-connections) and [Reading data from different MySQL databases
using dynamically loaded connection parameters](https://help.qlik.com/talend/r/en-US/8.0/components/context/reading-data-from-different-mysql-databases-using-dynamically-loaded-connection-parameters). For more information on
Dynamic settings and context variables, see
[Dynamic schema](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/dynamic-schema) and [Creating a context group and define context
variables in it](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/creating-context-group-and-define-context-variables-in-it). | **Related concepts** * [Handling data with Amazon Aurora](https://help.qlik.com/talend/en-US/components/8.0/amazon-aurora/tamazonaurorainput-tamazonauroracommit-tlogrow-handling-data-with-amazon-aurora-standard-component-this)