tJDBCTableList - 6.3

Talend Open Studio for Big Data Components Reference Guide

EnrichVersion
6.3
EnrichProdName
Talend Open Studio for Big Data
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

Function

Iterates on a set of table names through a defined JDBC connection.

Purpose

Lists the names of a given set of JDBC tables using a select statement based on a Where clause.

tJDBCTableList Properties

Component family

Databases/JDBC

Basic settings

Database type

Select a database from the list, such as Mysql, Oracle, etc.

 

Component list

Select the tJDBCConnection component or a database-specific connection component if the relevant database is selected from the Database type list.

Advanced settings

Use filter

Select this check box to filter the tables to be iterated on.

 

Regular expression for tables name

Enter the regular expression to identify table names.

Available when Use filter is selected.

 

Filter criteria

Select the criteria for filtering table names.

Include: iterates on the table names identified by the regular expression only.

Exclude: iterates on the table names other than those identified by the regular expression.

Available when Use filter is selected.

 

tStatCatcher Statistics

Select this check box to collect the log data at the component level.

Global Variables

CURRENT_TABLE: the name of the table currently iterated upon. This is a Flow variable and it returns a string.

NB_TABLE: the number of tables iterated upon so far. This is a Flow 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

This component is to be used along with JDBC components, especially with tJDBCConnection.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Related scenario

For tJDBCTableList related scenario, see Scenario: Iterating on a DB table and listing its column names.