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Message Posted: Mon, 05 Apr 2010 @ 21:11:36 GMT
My coworker looked this up; we enjoy details.
On page 65 of the data types manual, talking about character literals:
Character literals consist of zero or more alphanumeric characters enclosed in single quotation marks. The total length of a character literal is 0 to 31000 bytes.
A zero-length character literal is represented by two consecutive single quotation marks ( '' ).
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