# Inquiry Primary Key (Not server Generated)

**URL:** <https://forum.servoy.com/t/inquiry-primary-key-not-server-generated/19682>\
**Category:** Classic Servoy\
**Created:** [May 8, 2018, 7:35pm UTC](https://forum.servoy.com/t/inquiry-primary-key-not-server-generated/19682 "2018-05-08T19:35:32Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![abeermann](https://avatars.discourse-cdn.com/v4/letter/a/dec6dc/32.png) [@abeermann](https://forum.servoy.com/u/abeermann)\
**Post date:** [May 9, 2018, 6:52am UTC](https://forum.servoy.com/t/inquiry-primary-key-not-server-generated/19682/2 "2018-05-09T06:52:03Z")

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Hi

Query onDatachange of form element “person\_id” !?  
var qb = “select person\_id from personas where person\_id = ?”  
var result = databaseManager.getDataSetByQuery(server\_name,qb,[newValue],-1)  
if(result.getMaxRowIndex() \> 0)  
{  
error…  
}

regards  
Albert

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