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I want to test if a certain BLOB starts with character 255 (\xff). Is there a way to encode this character in a literal string?
Table 9.1. Special Character Escape Sequences gives certain special characters but not a way to encode arbitrary characters.
Failing a way to encode characters, is there a different workaround?
Use a hexadecimal literal, e.g. X’FF’. See http://dev.mysql.com/doc/refman/5.0/en/hexadecimal-literals.html