>>Script Language and Platform: SQL
This script will compare NULL with NULL, because NULL is not equal to NULL.
Author: Paul Nersesov
declare
a number := NULL;
b number := NULL;
begin
if nvl(a, 99999) = nvl(b, 99999) then
dbms_output.put_line(‘Both values are NULL.’);
end if;
end;
—— ordeclare
a number := NULL;
b number := NULL;
begin
if a IS NULL and b IS NULL then
dbms_output.put_line(‘Both values are NULL.’);
end if;
end;
Disclaimer: We hope that the information on these script pages is
valuable to you. Your use of the information contained in these pages,
however, is at your sole risk. All information on these pages is provided
“as -is”, without any warranty, whether express or implied, of its accuracy,
completeness, or fitness for a particular purpose…
Disclaimer Continued
Back to Database Journal Home
