Not able to add a table from external Redshift Spectrum schema

• I have checked the superset logs for python stacktraces and included it here as text if any
• I have reproduced the issue with at least the latest released version of superset
• I have checked the issue tracker for the same issue and I haven’t found one similar

Superset version

0.26.3

Expected results

I want to add a table from external Redshift Spectrum schema, in order to create charts based on this table. I expect the flow will be the same as with “local” Redshift schemas:

1. Sources -> Databases -> Add (postgresql)
2. Sources -> Tables -> Add (select redshift DB, put schema name and table name)
3. Observe a table in a table list

Actual results

Following error is displayed:

Table [spectrum.assoc] could not be found, please double check your database connection, schema, and table name

where spectrum is an external schema name and assoc is a table name.

Steps to reproduce

Create Redshift cluster; create external spectrum schema; add a table to the metastore

Notes

• I think this might be a duplicate of https://github.com/apache/incubator-superset/issues/3316
• In psql console, you can’t get a list of tables in external spectrum schema by using \dS, only by querying SVV_EXTERNAL_TABLES system view.
• In Superset’s SQL Lab I can query external spectrum tables by using schema.tablename naming

[RodBart]

another workaround, could be create a table in a local schema whit the same structure as the table in external schema, then import the new table and finaly change the schema in superset for the external schema, it worked for me.

Can you explain more on how you import the new table and change the schema in superset for the external echema? Do you mean by import the table in the local schema into superset. Then edit the dataset and change the schema to the external schema? Thanks!

Yes, exactly

[blackhawk28]

hi @RodBart and @robert-yxin05 I need some clarification, where did you create the table in redshift? and in local schema? and then import that table with the local schema in superset then change its schema to external? and the table which we’ll create in local schema, its name should be same as of external_table right?