# Vega: Set a text for empty data set
**URL:** https://discuss.elastic.co/t/vega-set-a-text-for-empty-data-set/325099
**Category:** Kibana
**Tags:** vega
**Created:** [February 9, 2023, 7:09am UTC](https://discuss.elastic.co/t/vega-set-a-text-for-empty-data-set/325099 "2023-02-09T07:09:29Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Irwan\_Kurniawan](https://discuss.elastic.co/u/Irwan_Kurniawan)
#### Post date: [February 9, 2023, 7:09am UTC](https://discuss.elastic.co/t/vega-set-a-text-for-empty-data-set/325099/1 "2023-02-09T07:09:29Z")
Actually my condition same with this thread but when I try, it doesn't work for me.
> [@Vega: Handle a situation where data-set returned is empty](https://discuss.elastic.co/t/vega-handle-a-situation-where-data-set-returned-is-empty/262210):
>
> When querying for data, there are situations where the returned data-set is empty for certain time ranges. Such a situation occurred in Vega (returned an empty array) and I tried to create a condition using expressions to check if the data-set is empty but it doesn't seem to work. length(data('table')) == 0 ? '-' : datum.sum Adding the above test condition in a formula transform says Undefined data set name: "table". Nothing seems to change when it is used inside a mark as a signal for a field.…
I did the filter transform and when there's no rows that shown after the transform, I want to make a static text to inform that.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 9, 2023, 7:09am UTC](https://discuss.elastic.co/t/vega-set-a-text-for-empty-data-set/325099/2 "2023-03-09T07:09:51Z")
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