Data overwrite in grafana gauge - visualization

I am using Grafana Dashboard to visualize the postgreSQL data.
There is dropdown list on the dashboard & data is populated on the gauge with the selection of element from dropdown list and it overwrite the previous data as shown in the image.
How can I resolve this problem ?

Related

Filter context for PIE Chart in Grafana

Is there any feature present to filter data in dashboard by clicking on one of the values in pie chart??
This can be done with the table visualization. Is it possible for piechart??
for example: Refer pic(red circled part)- If I click on piechart value DE then a filter should be added & applied to the dashboard

grafana variable section shows preview of one value instead of multiple values

I tried to create variable in Grafana by using flux query. The preview showing only one value instead of multiple value.
Code:
preview

In Grafana, how to build a data link to filter current dashboard when there is more than one variable?

I'm using Grafana v8.3.4 (a551d74b11)
I've a dashboard with many variables (filters). One of those is for exemple TransactionType.
I would like my charts to filter on click.
For example with a pie chart using TransactionType, I want to filter the TransactionType variable ,when I click in one of the element of the pie chart, by this element.
The closest feature I found is to use data link.
So far I tried in the pie chart the two data link there after.
The syntax is OK but the effect is not doing what i’m expecting.
a)
/d/${__dashboard.uid}/${__dashboard}?var-TransactionType=${__series.name}
For this one the data link apply the filter on TransactionType but clear all the other filters variables, even clear the All, so the dashboard is in error.
b)
/d/${__dashboard.uid}/${__dashboard}?${__all_variables}&var-TransactionType=${__series.name}
this one apply all filters first then add the TransactionType filter but, it keep the previous All value, so the filter become All + value, that don’t work, the dashboard is in error too.
==> Is there a way to keep all the existing variable filter unchanged and replace the value for one variable filter ?
move var-TransactionType=${__series.name} before ${__all_variables}

Grafana define Title value for chart

I am trying to create a dashboard. Able to generate Bar Gauge from the Prometheus data for simple query sum by (namespace) (kube_pod_container_status_running)
I want to display only Namespace rather than {namespace="kube-system"}, so was playing with Visualization > Field > Title for a while, but was not able to figure out.
Any Idea How can just display kube-system instead of {namespace="kube-system"} and make the list in sorted order, because everytime when i refresh the dashboard, it reshuffles the order.
What I need here ?
https://grafana.com/docs/grafana/latest/features/datasources/prometheus/
Legend format
Controls the name of the time series, using name or pattern. For example {{hostname}} will be replaced with label value for the label hostname.
=> configure Legend format in the Queries section and add {{namespace}} there.
I'm not sure about sort. You may try Prometheus sort/sort_desc function to sort query result.

How can update chart in Google site when data is edited the Google spreadsheet

I have a data in spread sheet in a one column only with length of 1000 cell, this data is being updated every 5 seconds from another application. i want to show this data as a chart in a Google site such that the chart updated automatically when data is update. i try to use "onEite()" function . could any one has code example