# Transaction group update only if the current value is NULL

**URL:** <https://forum.inductiveautomation.com/t/transaction-group-update-only-if-the-current-value-is-null/33608>\
**Category:** Ignition\
**Tags:** database\
**Created:** [April 1, 2020, 9:03pm UTC](https://forum.inductiveautomation.com/t/transaction-group-update-only-if-the-current-value-is-null/33608 "2020-04-01T21:03:15Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tyrel.parker](https://avatars.discourse-cdn.com/v4/letter/t/47e85d/32.png) [@tyrel.parker](https://forum.inductiveautomation.com/u/tyrel.parker)\
**Post date:** [April 1, 2020, 9:03pm UTC](https://forum.inductiveautomation.com/t/transaction-group-update-only-if-the-current-value-is-null/33608/1 "2020-04-01T21:03:15Z")

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Is there a way to have a transaction group only update if the current value in the destination == NULL? Or is there a way to have a transaction group trigger a named query and use the value as a parameter?