https://community.appian.com/discussions/f/process/6179/hi-i-use-the-smart-node-query-database-someone-has-try-tHi, I use the smart node &quot;Query database&quot;. Someone has try to use a &quot;data inupt&quot; to specify a field&#39;s name on my SQL query? I have some identical requests on differents fields, and for now i use several &quot;query database&quot; nodes. Thanks in advance. OriginalPostIDen-USTelligent Community 12https://community.appian.com/thread/27286?ContentTypeID=1Wed, 03 Feb 2016 21:57:52 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:8392476f-3f6a-48ca-aae0-893a9ccd1525abhinavg@victorb what design / solution approach you followed to implement the above usecase. If you can share your thoughts ...<div style="clear:both;"></div>https://community.appian.com/thread/24089?ContentTypeID=1Wed, 28 Oct 2015 17:34:34 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:4ecc4874-5375-444b-931b-6b1a77779b18Victor BoucheryHi Fabien, yes i could do that but with this solution a part of the business rules isn&#39;t stored in Appian. Thanks anyway<div style="clear:both;"></div>https://community.appian.com/thread/24058?ContentTypeID=1Wed, 28 Oct 2015 00:32:16 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:b0a1a8d8-8fcd-4d0d-843f-fc364b716013fabienbHi Victor, you could also use a stored proceudure to achieve this.<div style="clear:both;"></div>https://community.appian.com/thread/24054?ContentTypeID=1Tue, 27 Oct 2015 21:11:38 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:b7ae4531-104a-47de-b5b3-a2f285e61616anshuk170If you want to fetch datas from multiple tables you can create view and fetch the same using a!QueryEntity function.<div style="clear:both;"></div>https://community.appian.com/thread/24028?ContentTypeID=1Tue, 27 Oct 2015 12:48:54 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9388ed12-b338-4883-a93c-7644f52e956bVictor BoucheryI can&#39;t use QueryEntity because i need to request several tables with 1..n relationship. It will be implemented as nested mulitiples in Appian, but it&#39;s not recomanded due to performance issues and a!QueryEntity does not support request on nested multiple field.<div style="clear:both;"></div>https://community.appian.com/thread/24022?ContentTypeID=1Tue, 27 Oct 2015 08:40:04 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:68c1d9be-d3bd-41f5-87ae-853db75732ffanshuk170Try using a!queryEntity function to achieve what you are looking for.You can create rule inputs for the coloumns that you want to fetch.Query Db smartservice also degrades the performance of the application.As a best practice try using a!queryEntity functon.<div style="clear:both;"></div>https://community.appian.com/thread/23995?ContentTypeID=1Mon, 26 Oct 2015 21:18:01 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:64f68116-9c9e-4efc-b807-5d11580cb26eMike Schmittany particular reason you can&#39;t use a!queryEntity?<div style="clear:both;"></div>https://community.appian.com/thread/23994?ContentTypeID=1Mon, 26 Oct 2015 20:49:05 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:71953297-6e5c-4173-bd3b-03aa13c53fa0Victor BoucheryOk, thank you for your feed back.<div style="clear:both;"></div>https://community.appian.com/thread/23993?ContentTypeID=1Mon, 26 Oct 2015 20:36:52 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:5f3926d2-c6fb-4a3d-a4b8-da2eb4479138ChrisI don&#39;t believe you will be able to dynamically define the selection fields with the Query Database node. You can either pull back all columns you would need in each query, or run multiple Query DB nodes as you are now. Another alternative would be to use the Execute Stored Procedure node - create a procedure in SQL that allows you to send column name as an input, for use in a dynamic query there.<div style="clear:both;"></div>