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If you’re using Amazon Redshift and trying to use the “IS DISTINCT FROM” operator, you should be aware that this feature is officially listed as unsupported in Redshift’s documentation. Even if it seems to work in your current version (like 1.0.239402), it’s important to understand that it isn’t guaranteed to be reliable.
Since this operator is unsupported, relying on it in a production environment isn’t recommended. While it might perform as expected now, there are a few reasons to be cautious:
– Its behavior could change unexpectedly in future updates without notice.
– It might not be fully tested across all Redshift setups and situations.
– AWS support generally won’t assist with issues related to unsupported features.
To keep your database stable and supported, it’s best to use alternative methods for comparing data that are officially documented. You can often replicate the same logic with CASE statements or other supported comparison operators, combined with functions that handle NULL values appropriately.
If you’re unsure whether this unsupported feature might be a gap in the documentation or if there’s a future plan to support it, consider reaching out to AWS support. Opening a support case or posting in the AWS forums can help you get official guidance from the Redshift team about upcoming features or changes.
Remember, while Amazon Redshift shares some similarities with PostgreSQL, it isn’t identical. Be cautious about assuming that features or behaviors are the same in both systems, especially when it comes to unsupported or experimental functions.
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