# Property Binding: Polling Mode

**URL:** <https://forum.inductiveautomation.com/t/property-binding-polling-mode/7561>\
**Category:** Ignition\
**Created:** [November 12, 2013, 6:55pm UTC](https://forum.inductiveautomation.com/t/property-binding-polling-mode/7561 "2013-11-12T18:55:17Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rdeavers](https://avatars.discourse-cdn.com/v4/letter/r/779978/32.png) [@rdeavers](https://forum.inductiveautomation.com/u/rdeavers)\
**Post date:** [November 12, 2013, 6:55pm UTC](https://forum.inductiveautomation.com/t/property-binding-polling-mode/7561/1 "2013-11-12T18:55:17Z")

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Currently, property binding polling is only time based. Could it be based upon a tag or property change?

For example, I have an sql statement bound to the data property of a table. I only want the table to update when a certain property changes. I do understand that I can do this in a script but it would be cleaner if I could change the property binding.

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**Author:** ![adamaustin](https://avatars.discourse-cdn.com/v4/letter/a/5f8ce5/32.png) [@adamaustin](https://forum.inductiveautomation.com/u/adamaustin)\
**Post date:** [November 12, 2013, 11:35pm UTC](https://forum.inductiveautomation.com/t/property-binding-polling-mode/7561/2 "2013-11-12T23:35:37Z")

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The SQL property binding will refresh when any property referenced in the SQL statement changes. So you could make an identity statement in the WHERE clause of your SQL statement to refresh this table data:

```auto
SELECT value, label 
FROM mytable
WHERE {Root Container.Numeric Text Field.intValue}={Root Container.Numeric Text Field.intValue}
```

Now, whenever the Numeric Text Field value changes, the SQL statement will refresh its bindings.

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<div class="post-metadata">

**Author:** ![rdeavers](https://avatars.discourse-cdn.com/v4/letter/r/779978/32.png) [@rdeavers](https://forum.inductiveautomation.com/u/rdeavers)\
**Post date:** [November 15, 2013, 10:37pm UTC](https://forum.inductiveautomation.com/t/property-binding-polling-mode/7561/3 "2013-11-15T22:37:59Z")

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I didn’t realize that. Thank you.