tELTOutput Standard properties

Select an operation to be performed on the table defined.

• 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 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.

• Truncate table: The table content is deleted. You do not have the possibility to rollback the operation.

Action on data

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

• Insert: Adds 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, 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 UPDATE and DELETE only)

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

This field is available when Update or Delete is selected from the Action on data drop-down list and Use WHERE conditions table is not selected.

Use WHERE conditions table

Select this option to invoke the Where conditions table table, where you can set filter conditions by providing values in the Column, Function, and Value fields of the Where conditions table.

This option is available when Update or Delete is selected from the Action on data drop-down list.

Where conditions table

Add rows and enter conditions as prompted to filter the data to be updated or deleted during the update or delete operation. A data record is selected for the update or delete operation only when it matches all the conditions set in this table.

This option is available when the Use WHERE conditions table option is selected.

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 define a different output table name, between double quotation marks, in the Table name field which appears.

Mapping

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.

Select the column names that will be used to generate the SET clauses.

SET clauses will not be generated for the columns that are not selected.

This field appears 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

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 rule

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

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

Avoid using any keyword for the database as the table/column name or using any special character in the table/column name. If you want to, you can enclose the table/column name in a pair of \" to see whether it works. For example, when you want to use the keyword number as an Oracle database column name, you can have the Db Column value in the schema editor set to \"number\". But note that this solution does not always work.