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A comment on Three-Valued Logic. Parent comment
SQL is pretty clear what null is:
> “Every [SQL] data type includes a special value, called the null value,”[0] “that is used to indicate the absence of any data value”[1]
(http://modern-sql.com/concept/null)
[0] SQL:2011-1: §4.4.2 [1] SQL:2011-1: §3.1.1.12
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SQL is pretty clear what null is:
> “Every [SQL] data type includes a special value, called the null value,”[0] “that is used to indicate the absence of any data value”[1]
(http://modern-sql.com/concept/null)
[0] SQL:2011-1: §4.4.2 [1] SQL:2011-1: §3.1.1.12