2) All "normal" redshift views and tables are working. Basically, Amazon Redshift won’t allow two commands to run concurrently if there are multiple possible outcomes from that happening. If precision+scale (numeric/decimal) or size (varchar/char) information is missing from the columntype value, it is an impacted column and will need an explicit cast in the late binding view definition. I am loading a zipped(.gz) CSV file into a table in Redshift schema, data did not load into the table and I get the following error: ERROR: Load into table 'MyTable' failed. FYI, generally when it comes to troubleshooting Redshift/Postgres, it’s good to understand lock of conflicting modes and which command requires which types of locks (e.g. Late binding views are views that don’t check underlying tables until the view is queried. Redshift temp tables get created in a separate session-specific schema and lasts only for the duration of the session. The problem with this is that when your table contains millions of records, the power bi desktop refresh becomes unworkable due to the time taken to download the data. For this reason, you can name a temporary table the same as a permanent table and still not generate any errors. We cannot connect Power BI to redshift spectrum. Option 2: Manually locate and drop cascade the dependent views when dependency errors arise. we got the same issue. By default, it performs a “hash join” by creating hashes of the join key in each table, and then it distributes them to each other node in the cluster. 3) All spectrum tables (external tables) and views based upon those are not working. Redshift will act to prevent this isolation violation error, by aborting the transaction and rolling it back. I tried the POWER BI redshift connection as well as the redshift ODBC driver: When Redshift executes a join, it has a few strategies for connecting rows from different tables together. i really need a solution to be able to query subsets of data in redshift. Check 'stl_load_errors' system table for details. While with sqlalchemy I'm not able to do it. Redshift DESCRIBE Table Command Alternative. Consider an empty table. The table below lists the Redshift Create temp table syntax in a database. Transaction T1 SELECTs all the rows in the table and then INSERTs a row. Option 1: Use Redshift’s late binding views to “detach” the dependent view from the underlying table, thus preventing future dependency errors. 1) The connection to redshift itself works. Note that using psycopg2 I can connect with Redshift using the tunnel. Because we have an authentication server in premises. 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