If you're sure $preauth can be only 0 or 1 (or '0' or '1'), you can do
print qw(No Yes)[$preauth];

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Update: oops, this is meant as a reply to the OP... -- 2nd Update: thanks for reparenting

In reply to Re^2: Substitute "Yes" for "1" in mysql query output? by soonix
in thread Substitute "Yes" for "1" in mysql query output? by abner

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