Declaring a User-Defined Function in a specific database - 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 database environments. If you want to use Talend Studio to analyze columns against regular expressions in databases that do not natively support regular expressions, you can:


  1. Install the relevant regular expressions libraries on the database. For an example of creating a regular expression function on a database, see Main concept.
  2. Create a query template for the database in Talend Studio. For more information, see Defining a query template for a specific database.


  1. Execute the column analysis using the Java engine. In this case, the system will use the Java regular expressions to analyze the specified column(s) and not SQL regular expressions. For more information on the Java engine, see Using the Java or the SQL engine.