![]() The CLEAN function syntax has the following arguments: For an example of how to remove these additional nonprinting characters from text, see Top ten ways to clean your data. ![]() By itself, the CLEAN function does not remove these additional nonprinting characters. In the Unicode character set, there are additional nonprinting characters (values 127, 129, 141, 143, 144, and 157). Important: The CLEAN function was designed to remove the first 32 nonprinting characters in the 7-bit ASCII code (values 0 through 31) from text.
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