翻訳と辞書
Words near each other
・ ntsc
・ ntu
・ nu
・ nu thena
・ nu-calculus
・ nu-prolog
・ nubus
・ nucleol
・ nude
・ nuke
null
・ null modem
・ null-terminated multibyte string
・ nullary
・ numa
・ number crunching
・ number keys
・ number sign
・ numbers
・ numeric keypad


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null : FOLDOC
null
A special value used in several languages to represent the thing referred to by an uninitialised pointer.
A special value that may be stored in some database columns to represent an unknown, missing, not applicable, or undefined value. Nulls are treated completely differently from ordinary values when evaluating SQL expressions and there are several SQL constructs for dealing with nulls.
(2003-06-17)



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