fix: remove sharding column from the left part of the join
We should not expose a sharding column (i.e. "bucket_id") for any parts of the join if the user doesn't mention it explicitly in projection. Otherwise we receive incorrect query results.
We should not expose a sharding column (i.e. "bucket_id") for any parts of the join if the user doesn't mention it explicitly in projection. Otherwise we receive incorrect query results.