https://community.appian.com/discussions/f/general/24643/queryHi , I am new in Appian I have a simple question, I have data in my Database and I want to find if a data related to specific idNumber is exist in this database? Thank you,en-USTelligent Community 12https://community.appian.com/thread/95281?ContentTypeID=1Thu, 19 May 2022 13:55:46 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:168bca6d-6f0c-4d46-ba17-ba4bce3a892bNaresh<p>Hi,</p> <p>If you have access to Appian Academy you can also find several helpful videos regarding this topic.</p><div style="clear:both;"></div>https://community.appian.com/thread/95273?ContentTypeID=1Thu, 19 May 2022 08:25:34 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9a9ef469-4774-41e9-aa59-38ba9a841e73mazharahmed<p>As you are new in Appian, you need to create an expression rule first and then use a!queryEntity in that, you are also required to create one ri! related to your CDT and finally use filter under a!queryEntity function.</p> <p>Visit: <a href="https://docs.appian.com/suite/help/20.2/fnc_system_a_queryentity.html">https://docs.appian.com/suite/help/20.2/fnc_system_a_queryentity.html</a>&nbsp;for more understanding of a!queryEntity function.</p> <p>Happy coding!</p><div style="clear:both;"></div>https://community.appian.com/thread/95263?ContentTypeID=1Thu, 19 May 2022 07:37:23 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ef2c17c8-b9be-4b9d-8920-ffab27450f0aStefan Helzle<p>You would use a!queryEntity to look for data matching this ID.</p> <p>As that is a very generic question and answer, do you also have a more specific question?</p><div style="clear:both;"></div>