Property Value

true, if BLOB columns should be added into dump text; otherwise, false. The default value is false.

Hexadecimal notation is recoomended to use instead of text notation because it eliminates the encoding problems, which often occur when using Unicode or other multi-byte encodings. However in the hexadecimal notation one byte is represented by two hexadecimal digits, so the the dump script is larger than the script with the text notation dump. However, it is less than two times larger because when storing BLOB as a string in the script you need to escape the special characters, and this increases the dump size.

Reference

MySqlDump Class
MySqlDump Members