July 30, 2023

tELTPostgresqlOutput – Docs for ESB 7.x

tELTPostgresqlOutput

Performs the action (insert, update or delete) on data in the specified
Postgresql table through the SQL statement generated by the
tELTPostgresqlMap component.

The three ELT Postgresql components are closely
related, in terms of their operating conditions. These components should be used to
handle Postgresql database table schemas to generate SQL statements, including clauses,
which are to be executed in the database output table defined.

tELTPostgresqlOutput Standard properties

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

The Standard
tELTPostgresqlOutput component belongs to the ELT family.

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

Basic settings

Action on data

On the data of the table defined, you can
perform the following operation:

Insert: Add new entries
to the table. If duplicates are found, Job stops.

Update: Updates entries
in the table.

Delete: Deletes the
entries which correspond to the entry flow.

Schema and Edit schema

A schema is a row description, that is to say,
it defines the number of fields to be processed and passed on to the next
component. The schema is either built-in or remotely stored in the
Repository.

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.

 

Built-in: The schema is
created and stored locally for this component only. Related topic: see
Talend Studio
User Guide
.

 

Repository: The schema
already exists and is stored in the Repository, hence can be reused. Related
topic: see
Talend Studio
User Guide
.

Where clauses for (for UPDATE and
DELETE only
)

Enter a clause to filter the data to be updated
or deleted during the update or delete operations.

Default Table Name

Enter the default table name between double
quotation marks.

Default Schema Name

Enter the default schema name between double
quotation marks

Table name from connection name is
variable

Select this check box when the name of the connection to this
component is set to a variable, such as a context variable.

Use different table name

Select this check box to enter a different
output table name, between double quotation marks, in the Table name field which
appears.

Mapping

Specify the metadata mapping file
for the database to be used. The metadata mapping file is used for the data
type conversion between database and Java. For more information about the
metadata mapping, see the related documentation for Type mapping.

Advanced settings

Use update statement without subqueries

Select this option to generate an UPDATE statement for the
database.

This option is available when Update is selected from the
Action on data drop-down list in the Basic
settings
view.

tStatCatcher Statistics

Select this check box to gather the Job
processing metadata at a Job level as well as at each component level.

Global Variables

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_INSERTED: the number of rows inserted. 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 check box is
cleared, if the component has this check box.

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 further information about variables, see
Talend Studio

User Guide.

Usage

Usage rule

tELTPostgresqlOutput is
to be used along with the tELTPostgresqlMap. Note that the Output link to be used with
these components must correspond strictly to the syntax of the table name.

Note:

Note that the ELT components do not handle
actual data flow but only schema information.


Document get from Talend https://help.talend.com
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