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We are all familiar with the white question mark inside of a black diamond (�) when there is an encoding issue. Does this 'character' have an offical name? Or is it only referred to as the 'white question mark inside of a black diamond'? What would that name be if it has one?

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2 Answers 2

up vote 4 down vote accepted

It's the Unicode REPLACEMENT CHARACTER.

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It's called "Replacement Character". See the related Wikipedia page.

U+FFFD �​: "replacement character" used to replace an unknown or unprintable character.

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so, how do we replace the replacement character? i mean what is its ascii code? so i can select it via sql, e.g. char(226) for â –  mars-o Apr 15 at 5:46

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