I want to check whether any rows in my column (TIMESTAMP WITH TIME ZONE) are not stored using UTC. Is there a query I can write to match values that are stored with a TZ offset of 1 or 8 or 11 or (not 0)?


No, there is not. The type name timestamp with time zone can be misleading. The time zone is not stored at all, it just serves as input / output modifier and all values are stored as UTC internally.



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