INTERNAL ERROR

[Anonymous]

I have the following query;

select  customer_id,

    first(if(name_type = 'Official', name, null),true) official_name,

    first(if(name_type = 'Preferred', name, null),true) preferred_name

from

(

    select  customer_id,

        ifnull(name_type, 'Official') name_type,

        map(

          'title', title,

          'given_name', given_name,

          'surname', surname,

          'middle_name', middle_name,

          'initials', initials,

          'full', surname || ', ' || given_name

        ) name

    from  customer_name

    where   name_status = 'Active'

)

group by customer_id

If I run this query against a SQL Warehouse cluster, I get the message Internal error.

If I run the same query against a standard compute cluster, I don't get an error.

Not only am I wanting to understand why the error is occurring, but how do I debug something so non-specific as Internal error.

[Anonymous]

I experienced similar issues from time to time.  What helped is to refresh the browser page.

If that does not work, restart the sql warehouse.
The internal error indeed is pretty vague, but my experience is that this is not related to a wrong SQL script.

[Nick4]

This is not browser related... it's an ongoing issue with failing workflows each night.  The SQL warehouse is being restarted each day, but just to be sure, I created an entirely new warehouse and tried running against it... same error.