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PL/SQL ignores ASCII null characters

I am trying to send an escape sequence to a dot matrix printer. But the sequence has embedded ASCII null characters (i.e., chr(0)), and PL/SQL seems to ignore the first null and all sequence bytes after. Why is this and what is the workaround?

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Try using chr(32). Chr(32) equals a space.

For example:

select 'ABC' ||chr(32)||chr(32)||'DEF' from dual

Result: 'ABC DEF'

This was first published in August 2006

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