"Error updating options: Query error: 400 Bad Request" after upgrade to 8.x

  • What Grafana version and what operating system are you using?
    → Grafana 8.0.1 on Windows Server

  • What are you trying to achieve?
    → Update system from 7.5.4 to 8.0.1

  • How are you trying to achieve it?
    → Update based on Upgrade Grafana | Grafana documentation

  • What happened?
    → MSSQL based Dashboard shows error
    → Dashboard variables can’t be initialized
    ("Error updating options: Query error: 400 Bad Request)
    → variable query looks like "select distinct project from work_items_pr ]

  • What did you expect to happen?
    → no error like in version 7.5.4

  • Can you copy/paste the configuration(s) that you are having problems with?

  • Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.
    → yes: “Error updating options: Query error: 400 Bad Request”

  • Did you follow any online instructions? If so, what is the URL?

1 Like

I localized the root cause for this behavior with version 8.x:

By setting Min time interval to default value the dashboards are again


hi @pecs,

Glad you got this working. There are several patches that were released in 8.0.1 and 8.0.2 that dealt with SQL issues. If this returns, I’d try upgrading and testing again.

1 Like


I have the same issue with a Postgres datasource.
The variables are failed with “Error updating options: Query error: 400 Bad Request”
In the datasource settings, the interval is set to default.
When I click “Save & Test” the datasource is happy.

Does anyone know what the issue could be?



I have the same issue with MySQL data source.

I’m using the below dashboard for MySQL DB



I have the same problem with Grafana 8.1.3 and Postgres datasource.

Templating [variable]
Error updating options: Query error: 400

if I am using a data source configuration file(yaml) to configure the default source what attribute represents Minimum time interval in the data source. Would it be “time interval” as defined here, Provisioning | Grafana Labs under the JsonData section

By the way I am using a docker container to run Grafana and volume mounts the configuration

apiVersion: 1

  - name: PostgreSQL
    type: postgres
    database: mydb 
    user: mydb
      password: "xxxxxxxx"
      sslmode: "disable" 
      postgresVersion: 1200
      timescaledb: true

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