luke devon <[EMAIL PROTECTED]> asked:
> How can we define NULL values in perl ? for instance if I 
> wanted to assign a NULL value for a variable called "$x= , 
> how would it be in the code ?

NULL is a SQL term. The Perl equivalent is undef, i.e.

  $x = undef;

To check for definedness of a variable, use defined(), i.e.

  print "\$x is undef\n" unless defined $x;

HTH,
Thomas


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