True and False are boolean values in SQL, representing logical values of "true" and "false", respectively. Null is a special value that represents the absence of a value. It is used when a value is not known or not applicable, and is distinct from zero or an empty string. It is often used to indicate missing or unknown data.
Asked: 2023-06-28 20:36:51 +0000
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Last updated: Jun 28 '23