dosubot[bot] commented on issue #42389:
URL: https://github.com/apache/superset/issues/42389#issuecomment-5071689814

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   <!-- Answer -->
   This looks related to the **authorization hardening** introduced in [PR 
#40409](https://github.com/apache/superset/pull/40409), which tightened SQL Lab 
access so that operations now require a matching Superset **dataset-level** 
permission — `database_access` or `schema_access` alone is no longer sufficient 
for Gamma-style users.
   
   Here's what's happening in the "Create chart" flow:
   
   1. When you click **Create chart**, the frontend calls 
`/api/v1/dataset/get_or_create/` to create a dataset from the CTAS/CVAS result 
[[1]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/src/SqlLab/components/ExploreCtasResultsButton/index.tsx#L49-L77).
   2. The `CreateDatasetCommand` validates access via 
`raise_for_access(database=database, sql=sql, ...)` 
[[2]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/commands/dataset/create.py#L88-L97).
 For a Gamma user with only `database_access` (no `all_datasource_access`), 
this check fails because the hardened authorization now demands explicit 
**datasource-level** permission for the newly created/referenced table 
[[3]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/security/manager.py#L2346-L2404).
   3. Because the backend rejects the request, no valid `dataset_id` is 
returned, so the frontend navigation to Explore fails with the "Missing URL 
parameters" error.
   
   **Workarounds:**
   
   - Grant `all_datasource_access` to the role (which you've noted you want to 
avoid).
   - Grant **schema-level access** (`schema_access`) on the schema where CTAS 
tables are created (configured via `CTAS_SCHEMA_NAME_FUNC` in 
`superset_config.py`). This should satisfy `raise_for_access` at the schema 
level.
   - Ensure the user is set as **owner** of any datasets created, since 
ownership bypasses the datasource permission check 
[[4]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset/security/manager.py#L2346-L2350).
   
   This may be an unintended regression from the authorization hardening wave 
(PRs [#40409](https://github.com/apache/superset/pull/40409), 
[#38952](https://github.com/apache/superset/pull/38952), 
[#40497](https://github.com/apache/superset/pull/40497)) — the "Create chart" 
flow inherently creates *new* datasets that the user wouldn't have pre-existing 
permissions for. You may want to check whether the dataset created via 
`get_or_create` properly assigns the creating user as owner, which would allow 
the subsequent Explore access to succeed.
   
   
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