Constant
From Oracle FAQ
A constant as the name implies is a value that is not variable. It cannot be changed after it has been assigned to. By virtue of the fact that it cannot be modified a constant cannot be declared without also being initialised.
PL/SQL Example[edit]
DECLARE
-- c_someConstant CONSTANT NUMBER; -- ILLEGAL since no initial value has been supplied.
c_report_lines CONSTANT NUMBER := 80; -- Define a numeric constant
BEGIN
dbms_output.put_line('Report has '||c_report_lines||' lines');
END;
/
Also see[edit]
| Glossary of Terms | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | # |
