# tJDBCTableList Lists the names of a given set of JDBC tables using a select statement based on a Where clause. tJDBCTableList iterates on a set of table names through a defined JDBC connection. ## tJDBCTableList Standard properties These properties are used to configure tJDBCTableList running in the Standard Job framework. The Standard tJDBCTableList component belongs to the Databases family. The component in this framework is available in all Talend products. ## Basic settings | Properties | Description | | --- | --- | | 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 | Properties | Description | | --- | --- | | 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 | Variables | Description | | --- | --- | | 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 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 is to be used along with JDBC components,
especially with tJDBCConnection. |