Main concept - 7.1

Talend Open Studio for Data Quality User Guide

Talend Documentation Team
Talend Open Studio for Data Quality
Design and Development
Talend Studio

The regular expression function is not built into all different databases environments. This is why you need, when using some databases, to create a User-Defined Function (UDF) to extend the functionality of the database server.

For example, the following databases natively support regular expressions: MySQL, PostgreSQL, Oracle 10g, Ingres, etc., while Microsoft SQL server does not.

After you create the regular expression function, you should use the studio to declare that function in a specific database before being able to use regular expressions on analyzed columns.

For more information on how to declare a regular expression function in the studio, see Defining a query template for a specific database and Declaring a User-Defined Function in a specific database.