July 30, 2023

tMSSqlTableList – Docs for ESB 7.x

tMSSqlTableList

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

tMSSqlTableList Standard properties

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

The Standard
tMSSqlTableList component belongs to the Databases family.

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

Note: 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 Dynamic database components.

Basic settings

Database

Select a type of database from the list and click
Apply.

Component list

Select the tMSSqlConnection component in the list if more than
one connection are planned for the current job.

Where clause for table name selection

Enter the Where clause to identify the tables to
iterate on.

Advanced
settings

tStatCatcher
Statistics

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

Global Variables

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

Usage rule

This component is to be
used along with MSSql components, especially with tMSSqlConnection.

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.

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 and Reading data from different MySQL databases using dynamically loaded connection parameters. For more information on Dynamic
settings
and context variables, see Talend Studio
User Guide.

Related scenario

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


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